Use original TPU backend if possible
This commit is contained in:
parent
877fa39b8a
commit
f4eb896a69
148
aiserver.py
148
aiserver.py
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@ -157,6 +157,7 @@ class vars:
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spmeta = None # Metadata of current soft prompt, or None if not using a soft prompt
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sp = None # Current soft prompt tensor (as a NumPy array)
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sp_length = 0 # Length of current soft prompt in tokens, or 0 if not using a soft prompt
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has_genmod = False # Whether or not at least one loaded Lua userscript has a generation modifier
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svowname = "" # Filename that was flagged for overwrite confirm
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saveow = False # Whether or not overwrite confirm has been displayed
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genseqs = [] # Temporary storage for generated sequences
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@ -184,6 +185,7 @@ class vars:
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remote = False
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nopromptgen = False
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rngpersist = False
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nogenmod = False
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#==================================================================#
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# Function to get model selection at startup
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@ -1062,19 +1064,6 @@ else:
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vars.allowsp = True
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vars.modeldim = int(tpu_mtj_backend.params["d_model"])
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tokenizer = tpu_mtj_backend.tokenizer
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soft_tokens = tpumtjgetsofttokens()
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threading.Thread( # Compile backend code in background
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target=tpu_mtj_backend.infer,
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args=(np.tile(np.uint32((23403, 727, 20185)), (vars.numseqs, 1)),),
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kwargs={
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"soft_embeddings": vars.sp,
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"soft_tokens": soft_tokens,
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"use_callback": False,
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"gen_len": 1,
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"numseqs": vars.numseqs,
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"excluded_world_info": list(set() for _ in range(vars.numseqs)),
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},
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).start()
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# Set up Flask routes
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@app.route('/')
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@ -1182,13 +1171,18 @@ def load_lua_scripts():
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modulenames.append(lst[i]["modulename"])
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descriptions.append(lst[i]["description"])
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vars.has_genmod = False
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try:
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vars.lua_koboldbridge.obliterate_multiverse()
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tpool.execute(vars.lua_koboldbridge.load_corescript, vars.corescript)
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tpool.execute(vars.lua_koboldbridge.load_userscripts, filenames, modulenames, descriptions)
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vars.has_genmod = tpool.execute(vars.lua_koboldbridge.load_userscripts, filenames, modulenames, descriptions)
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vars.lua_running = True
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except lupa.LuaError as e:
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vars.lua_koboldbridge.obliterate_multiverse()
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try:
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vars.lua_koboldbridge.obliterate_multiverse()
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except:
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pass
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vars.lua_running = False
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if(vars.serverstarted):
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emit('from_server', {'cmd': 'errmsg', 'data': 'Lua script error, please check console.'}, broadcast=True)
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@ -2035,6 +2029,10 @@ def get_message(msg):
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vars.rngpersist = msg['data']
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settingschanged()
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refresh_settings()
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elif(msg['cmd'] == 'setnogenmod'):
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vars.nogenmod = msg['data']
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settingschanged()
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refresh_settings()
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elif(not vars.remote and msg['cmd'] == 'importwi'):
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wiimportrequest()
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@ -2105,6 +2103,8 @@ def savesettings():
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js["dynamicscan"] = vars.dynamicscan
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js["nopromptgen"] = vars.nopromptgen
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js["rngpersist"] = vars.rngpersist
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js["nogenmod"] = vars.nogenmod
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js["antemplate"] = vars.setauthornotetemplate
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js["userscripts"] = vars.userscripts
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@ -2170,6 +2170,8 @@ def loadsettings():
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vars.nopromptgen = js["nopromptgen"]
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if("rngpersist" in js):
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vars.rngpersist = js["rngpersist"]
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if("nogenmod" in js):
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vars.nogenmod = js["nogenmod"]
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if("antemplate" in js):
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vars.setauthornotetemplate = js["antemplate"]
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@ -2952,16 +2954,62 @@ def tpumtjgenerate(txt, minimum, maximum, found_entries=None):
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# Submit input text to generator
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try:
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context = np.tile(np.uint32(txt), (vars.numseqs, 1))
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soft_tokens = tpumtjgetsofttokens()
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global past
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past = np.empty((vars.numseqs, 0), dtype=np.uint32)
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while(True):
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genout, n_generated, regeneration_required, halt = tpool.execute(
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tpu_mtj_backend.infer,
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context,
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if(vars.dynamicscan or (not vars.nogenmod and vars.has_genmod)):
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context = np.tile(np.uint32(txt), (vars.numseqs, 1))
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past = np.empty((vars.numseqs, 0), dtype=np.uint32)
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while(True):
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genout, n_generated, regeneration_required, halt = tpool.execute(
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tpu_mtj_backend.infer_dynamic,
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context,
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gen_len = maximum-minimum+1,
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temp=vars.temp,
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top_p=vars.top_p,
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top_k=vars.top_k,
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tfs=vars.tfs,
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numseqs=vars.numseqs,
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repetition_penalty=vars.rep_pen,
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soft_embeddings=vars.sp,
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soft_tokens=soft_tokens,
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excluded_world_info=found_entries,
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)
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past = np.pad(past, ((0, 0), (0, n_generated)))
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for r in range(vars.numseqs):
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for c in range(vars.lua_koboldbridge.generated_cols):
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assert vars.lua_koboldbridge.generated[r+1][c+1] is not None
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past[r, c] = vars.lua_koboldbridge.generated[r+1][c+1]
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if(halt or not regeneration_required):
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break
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print("(regeneration triggered)")
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encoded = []
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for i in range(vars.numseqs):
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txt = tokenizer.decode(past[i])
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winfo, mem, anotetxt, _found_entries = calcsubmitbudgetheader(txt, force_use_txt=True)
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found_entries[i].update(_found_entries)
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txt, _, _ = calcsubmitbudget(len(vars._actions), winfo, mem, anotetxt, vars._actions, submission=txt)
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encoded.append(np.array(txt, dtype=np.uint32))
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max_length = len(max(encoded, key=len))
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encoded = np.stack(tuple(np.pad(e, (max_length - len(e), 0), constant_values=tpu_mtj_backend.pad_token_id) for e in encoded))
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context = np.concatenate(
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(
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encoded,
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past,
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),
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axis=-1,
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)
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else:
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genout = tpool.execute(
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tpu_mtj_backend.infer_static,
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np.uint32(txt),
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gen_len = maximum-minimum+1,
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temp=vars.temp,
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top_p=vars.top_p,
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@ -2971,35 +3019,10 @@ def tpumtjgenerate(txt, minimum, maximum, found_entries=None):
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repetition_penalty=vars.rep_pen,
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soft_embeddings=vars.sp,
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soft_tokens=soft_tokens,
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excluded_world_info=found_entries,
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)
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past = np.pad(past, ((0, 0), (0, n_generated)))
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for r in range(vars.numseqs):
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for c in range(vars.lua_koboldbridge.generated_cols):
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assert vars.lua_koboldbridge.generated[r+1][c+1] is not None
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past[r, c] = vars.lua_koboldbridge.generated[r+1][c+1]
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if(halt or not regeneration_required):
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break
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print("(regeneration triggered)")
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encoded = []
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past = genout
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for i in range(vars.numseqs):
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txt = tokenizer.decode(past[i])
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winfo, mem, anotetxt, _found_entries = calcsubmitbudgetheader(txt, force_use_txt=True)
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found_entries[i].update(_found_entries)
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txt, _, _ = calcsubmitbudget(len(vars._actions), winfo, mem, anotetxt, vars._actions, submission=txt)
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encoded.append(np.array(txt, dtype=np.uint32))
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max_length = len(max(encoded, key=len))
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encoded = np.stack(tuple(np.pad(e, (max_length - len(e), 0), constant_values=tpu_mtj_backend.pad_token_id) for e in encoded))
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context = np.concatenate(
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(
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encoded,
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past,
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),
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axis=-1,
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)
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vars.lua_koboldbridge.generated[i+1] = vars.lua_state.table(*genout[i].tolist())
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except Exception as e:
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if(issubclass(type(e), lupa.LuaError)):
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@ -3181,6 +3204,7 @@ def refresh_settings():
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emit('from_server', {'cmd': 'updatedynamicscan', 'data': vars.dynamicscan}, broadcast=True)
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emit('from_server', {'cmd': 'updatenopromptgen', 'data': vars.nopromptgen}, broadcast=True)
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emit('from_server', {'cmd': 'updaterngpersist', 'data': vars.rngpersist}, broadcast=True)
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emit('from_server', {'cmd': 'updatenogenmod', 'data': vars.nogenmod}, broadcast=True)
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emit('from_server', {'cmd': 'updatefrmttriminc', 'data': vars.formatoptns["frmttriminc"]}, broadcast=True)
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emit('from_server', {'cmd': 'updatefrmtrmblln', 'data': vars.formatoptns["frmtrmblln"]}, broadcast=True)
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@ -4434,6 +4458,34 @@ def randomGameRequest(topic, memory=""):
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loadmodelsettings()
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loadsettings()
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# Precompile TPU backend if required
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if(vars.model in ("TPUMeshTransformerGPTJ",)):
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soft_tokens = tpumtjgetsofttokens()
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if(vars.dynamicscan or (not vars.nogenmod and vars.has_genmod)):
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threading.Thread(
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target=tpu_mtj_backend.infer_dynamic,
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args=(np.tile(np.uint32((23403, 727, 20185)), (vars.numseqs, 1)),),
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kwargs={
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"soft_embeddings": vars.sp,
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"soft_tokens": soft_tokens,
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"gen_len": 1,
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"use_callback": False,
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"numseqs": vars.numseqs,
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"excluded_world_info": list(set() for _ in range(vars.numseqs)),
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},
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).start()
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else:
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threading.Thread(
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target=tpu_mtj_backend.infer_static,
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args=(np.uint32((23403, 727, 20185)),),
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kwargs={
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"soft_embeddings": vars.sp,
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"soft_tokens": soft_tokens,
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"gen_len": 1,
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"numseqs": vars.numseqs,
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},
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).start()
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#==================================================================#
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# Final startup commands to launch Flask app
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#==================================================================#
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13
bridge.lua
13
bridge.lua
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@ -1851,13 +1851,14 @@ return function(_python, _bridged)
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-- API for aiserver.py
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--==========================================================================
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---@return nil
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---@return boolean
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function koboldbridge.load_userscripts(filenames, modulenames, descriptions)
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config_files = {}
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config_file_filename_map = {}
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koboldbridge.userscripts = {}
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koboldbridge.userscriptmodule_filename_map = {}
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koboldbridge.num_userscripts = 0
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local has_genmod = false
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for i, filename in _python.enumerate(filenames) do
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bridged.load_callback(filename, modulenames[i])
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koboldbridge.logging_name = modulenames[i]
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@ -1865,12 +1866,15 @@ return function(_python, _bridged)
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local f, err = old_loadfile(join_folder_and_filename(bridged.userscript_path, filename), "t", koboldbridge.get_universe(filename))
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if err ~= nil then
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error(err)
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return
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return false
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end
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---@type KoboldUserScript
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local _userscript = f()
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koboldbridge.logging_name = nil
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koboldbridge.filename = nil
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if _userscript.genmod ~= nil then
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has_genmod = true
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end
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local userscript = deepcopy(KoboldUserScriptModule)
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rawset(userscript, "_inmod", function()
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koboldbridge.logging_name = modulenames[i]
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@ -1903,6 +1907,7 @@ return function(_python, _bridged)
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koboldbridge.userscriptmodule_filename_map[userscript] = filename
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koboldbridge.num_userscripts = i + 1
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end
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return has_genmod
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end
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---@return nil
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@ -1949,7 +1954,9 @@ return function(_python, _bridged)
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koboldbridge.userstate = "genmod"
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if koboldbridge.genmod ~= nil then
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local _generated = deepcopy(koboldbridge.generated)
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r = koboldbridge.genmod()
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if not bridged.vars.nogenmod then
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r = koboldbridge.genmod()
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end
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setmetatable(koboldbridge.logits, nil)
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for kr, vr in old_next, koboldbridge.logits, nil do
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setmetatable(vr, nil)
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@ -162,6 +162,17 @@ gensettingstf = [{
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"step": 1,
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"default": 0,
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"tooltip": "When enabled, the Memory text box in the Random Story dialog will be prefilled by default with your current story's memory instead of being empty."
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},
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{
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"uitype": "toggle",
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"unit": "bool",
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"label": "No Genmod",
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"id": "setnogenmod",
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"min": 0,
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"max": 1,
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"step": 1,
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"default": 0,
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"tooltip": "Disables userscript generation modifiers."
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}]
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gensettingsik =[{
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@ -2194,6 +2194,9 @@ $(document).ready(function(){
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if(!$("#setrngpersist").prop("checked")) {
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$("#rngmemory").val("");
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}
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} else if(msg.cmd == "updatenogenmod") {
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// Update toggle state
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$("#setnogenmod").prop('checked', msg.data).change();
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} else if(msg.cmd == "runs_remotely") {
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remote = true;
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hide([button_savetofile, button_import, button_importwi]);
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@ -17,7 +17,7 @@
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<script src="static/bootstrap.min.js"></script>
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<script src="static/bootstrap-toggle.min.js"></script>
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<script src="static/rangy-core.min.js"></script>
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<script src="static/application.js?ver=1.16.4v"></script>
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<script src="static/application.js?ver=1.16.4w"></script>
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</head>
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<body>
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<input type="file" id="remote-save-select" accept="application/json" style="display:none">
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@ -60,7 +60,7 @@ def __batch_xmap(shard_dim=1):
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return inner
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def apply_repetition_penalty(logits, tokens, repetition_penalty):
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def apply_repetition_penalty_dynamic(logits, tokens, repetition_penalty):
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'''
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This gets called by generate_loop_fn to apply repetition penalty
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to the 1D array logits using the provided 1D array of tokens to penalize
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@ -85,7 +85,7 @@ def apply_repetition_penalty(logits, tokens, repetition_penalty):
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logits[tokens] = penalty_logits
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return logits
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def kobold_sample(key, logits, top_p=0.9, temp=0.5, top_k=0, tfs=1.0):
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def kobold_sample_dynamic(key, logits, top_p=0.9, temp=0.5, top_k=0, tfs=1.0):
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'''
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This gets called by generate_loop_fn to apply a series of 4 filters
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to the logits (top-k, then top-p, then TFS, then temperature) before
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@ -183,6 +183,127 @@ def kobold_sample(key, logits, top_p=0.9, temp=0.5, top_k=0, tfs=1.0):
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# probability distribution)
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return jax.random.categorical(key, logits, -1).astype(np.uint32)
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def apply_repetition_penalty_static(logits, tokens, repetition_penalty):
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'''
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This gets called by generate_loop_fn to apply repetition penalty
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to the 1D array logits using the provided 1D array of tokens to penalize
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'''
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# Make a new array with the same length as the tokens array but with
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# each element replaced by the value at the corresponding index in the
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# logits array; e.g.
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# if logits is [77, 5, 3, 98] and tokens is [0, 1, 2, 3, 2, 3, 1],
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# then penalty_logits will be [77, 5, 3, 98, 3, 98, 5]
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penalty_logits = jnp.take(logits, tokens)
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# Divide positive values by repetition_penalty and multiply negative
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# values by repetition_penalty (the academic publication that described
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# this technique actually just only divided, but that would cause tokens
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# with negative logits to become more likely, which is obviously wrong)
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penalty_logits = jnp.where(
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penalty_logits > 0,
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penalty_logits/repetition_penalty,
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penalty_logits*repetition_penalty,
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)
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# Finally, put those penalized logit values back into their original
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# positions in the logits array
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return logits.at[tokens].set(penalty_logits)
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def kobold_sample_static(key, logits, top_p=0.9, temp=0.5, top_k=0, tfs=1.0):
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'''
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This gets called by generate_loop_fn to apply a series of 4 filters
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to the logits (top-k, then top-p, then TFS, then temperature) before
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picking one token using the modified logits
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'''
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# Top-k (keep only the k tokens with the highest logits and remove
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# the rest, by setting their logits to negative infinity)
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def top_k_filter(logits):
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# After sorting the logits array in descending order,
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# sorted_indices_to_remove is a 1D array that is True for tokens
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# in the sorted logits array we want to remove and False for ones
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# we want to keep, in this case the first top_k elements will be
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# False and the rest will be True
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sorted_indices_to_remove = jnp.arange(len(logits)) >= top_k
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# Unsort the logits array back to its original configuration and
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# remove tokens we need to remove
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_, indices_to_remove = jax.lax.sort_key_val(
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jnp.argsort(-logits),
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sorted_indices_to_remove,
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)
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return jnp.where(indices_to_remove, -jnp.inf, logits)
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logits = jax.lax.cond(top_k > 0, top_k_filter, lambda x: x, logits)
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# Top-p (after sorting the remaining tokens again in descending order of
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# logit, remove the ones that have cumulative softmax probability
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# greater than p)
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def top_p_filter(logits):
|
||||
# Sort the logits array in descending order, replace every element
|
||||
# with e (Euler's number) to the power of that element, and divide
|
||||
# each element of the new array by the sum of the elements in the
|
||||
# new array
|
||||
sorted_logits = -jnp.sort(-logits)
|
||||
probabilities = jax.nn.softmax(sorted_logits)
|
||||
# Calculate cumulative_probabilities as the prefix-sum array of
|
||||
# probabilities
|
||||
cumulative_probabilities = jnp.cumsum(probabilities, axis=-1)
|
||||
# We want to remove tokens with cumulative probability higher
|
||||
# than top_p
|
||||
sorted_indices_to_remove = cumulative_probabilities > top_p
|
||||
# Don't ever remove the token with the highest logit, even if
|
||||
# the probability is higher than top_p
|
||||
sorted_indices_to_remove = sorted_indices_to_remove.at[0].set(False)
|
||||
# Unsort and remove
|
||||
_, indices_to_remove = jax.lax.sort_key_val(
|
||||
jnp.argsort(-logits),
|
||||
sorted_indices_to_remove,
|
||||
)
|
||||
return jnp.where(indices_to_remove, -jnp.inf, logits)
|
||||
logits = jax.lax.cond(top_p < 1.0, top_p_filter, lambda x: x, logits)
|
||||
# Tail free sampling (basically top-p a second time on remaining tokens
|
||||
# except it's the "cumulative normalized absolute second finite
|
||||
# differences of the softmax probabilities" instead of just the
|
||||
# cumulative softmax probabilities)
|
||||
def tail_free_filter(logits):
|
||||
# Sort in descending order
|
||||
sorted_logits = -jnp.sort(-logits)
|
||||
# Softmax again
|
||||
probabilities = jax.nn.softmax(sorted_logits)
|
||||
# Calculate the second finite differences of that array (i.e.
|
||||
# calculate the difference array and then calculate the difference
|
||||
# array of the difference array)
|
||||
d2 = jnp.diff(jnp.diff(probabilities))
|
||||
# Get the absolute values of all those second finite differences
|
||||
d2 = jnp.abs(d2)
|
||||
# Normalize (all elements in the array are divided by the sum of the
|
||||
# array's elements)
|
||||
d2 = d2 / d2.sum(axis=-1, keepdims=True)
|
||||
# Get the prefix-sum array
|
||||
cumulative_d2 = jnp.cumsum(d2, axis=-1)
|
||||
# We will remove the tokens with a cumulative normalized absolute
|
||||
# second finite difference larger than the TFS value
|
||||
sorted_indices_to_remove = cumulative_d2 > tfs
|
||||
# Don't remove the token with the highest logit
|
||||
sorted_indices_to_remove = sorted_indices_to_remove.at[0].set(False)
|
||||
# Since the d2 array has two fewer elements than the logits array,
|
||||
# we'll add two extra Trues to the end
|
||||
sorted_indices_to_remove = jnp.pad(
|
||||
sorted_indices_to_remove,
|
||||
(0, 2),
|
||||
constant_values=True,
|
||||
)
|
||||
# Unsort and remove
|
||||
_, indices_to_remove = jax.lax.sort_key_val(
|
||||
jnp.argsort(-logits),
|
||||
sorted_indices_to_remove,
|
||||
)
|
||||
return jnp.where(indices_to_remove, -jnp.inf, logits)
|
||||
logits = jax.lax.cond(tfs < 1.0, tail_free_filter, lambda x: x, logits)
|
||||
# Temperature (just divide the logits by the temperature)
|
||||
def temp_filter(logits):
|
||||
return logits / temp
|
||||
logits = jax.lax.cond(True, temp_filter, lambda x: x, logits)
|
||||
# Finally, pick one token using the softmax thingy again (it gives
|
||||
# an array whose elements sum to 1 so it can be used nicely as a
|
||||
# probability distribution)
|
||||
return jax.random.categorical(key, logits, -1).astype(jnp.uint32)
|
||||
|
||||
pad_token_id = 50256
|
||||
|
||||
def sample_func(data, key, numseqs_aux, badwords, repetition_penalty, sampler_options):
|
||||
|
@ -192,11 +313,11 @@ def sample_func(data, key, numseqs_aux, badwords, repetition_penalty, sampler_op
|
|||
generated, generated_index, logits, _ = carry[0][0]
|
||||
sample_key = carry[1]
|
||||
# Get the pseudo-random number generator key that will
|
||||
# be used by kobold_sample to randomly pick a token
|
||||
# be used by kobold_sample_dynamic to randomly pick a token
|
||||
sample_key, new_key = jax.random.split(sample_key, num=2)
|
||||
# Apply repetition penalty to all tokens that are
|
||||
# currently inside the "generated" array
|
||||
logits = apply_repetition_penalty(
|
||||
logits = apply_repetition_penalty_dynamic(
|
||||
logits,
|
||||
generated,
|
||||
repetition_penalty
|
||||
|
@ -205,11 +326,11 @@ def sample_func(data, key, numseqs_aux, badwords, repetition_penalty, sampler_op
|
|||
# their logits to negative infinity which effectively
|
||||
# makes their probabilities of being chosen zero
|
||||
logits[badwords] = -np.inf
|
||||
# Use the sampler (kobold_sample) to pick one token
|
||||
# Use the sampler (kobold_sample_dynamic) to pick one token
|
||||
# based on the logits array as a 0D uint32 array
|
||||
# (higher logit means higher probability of being
|
||||
# picked, non-linearly)
|
||||
next_token = kobold_sample(
|
||||
next_token = kobold_sample_dynamic(
|
||||
sample_key,
|
||||
logits,
|
||||
**sampler_options,
|
||||
|
@ -236,6 +357,100 @@ class PenalizingCausalTransformer(CausalTransformer):
|
|||
def __init__(self, config):
|
||||
# Initialize
|
||||
super().__init__(config)
|
||||
def generate_static(state, key, ctx, ctx_length, gen_length, numseqs_aux, sampler_options, soft_embeddings=None):
|
||||
numseqs = numseqs_aux.shape[0]
|
||||
# These are the tokens that we don't want the AI to ever write
|
||||
self.badwords = jnp.array([6880, 50256, 42496, 4613, 17414, 22039, 16410, 27, 29, 38430, 37922, 15913, 24618, 28725, 58, 47175, 36937, 26700, 12878, 16471, 37981, 5218, 29795, 13412, 45160, 3693, 49778, 4211, 20598, 36475, 33409, 44167, 32406, 29847, 29342, 42669, 685, 25787, 7359, 3784, 5320, 33994, 33490, 34516, 43734, 17635, 24293, 9959, 23785, 21737, 28401, 18161, 26358, 32509, 1279, 38155, 18189, 26894, 6927, 14610, 23834, 11037, 14631, 26933, 46904, 22330, 25915, 47934, 38214, 1875, 14692, 41832, 13163, 25970, 29565, 44926, 19841, 37250, 49029, 9609, 44438, 16791, 17816, 30109, 41888, 47527, 42924, 23984, 49074, 33717, 31161, 49082, 30138, 31175, 12240, 14804, 7131, 26076, 33250, 3556, 38381, 36338, 32756, 46581, 17912, 49146])
|
||||
@hk.transform
|
||||
def generate_sample(context, ctx_length):
|
||||
# Give the initial context to the transformer
|
||||
transformer = CausalTransformerShard(config)
|
||||
def generate_initial_scan_fn(sequence_index, _):
|
||||
_, initial_state = transformer.generate_initial(context, ctx_length, soft_embeddings=soft_embeddings)
|
||||
# The "generated" array will contain the tokens from the
|
||||
# context as well as the tokens picked by the sampler at
|
||||
# each stage, padded with a bunch of 50256s, so we know
|
||||
# which tokens have to be repetition penalized
|
||||
generated = jnp.pad(context, (0, config["seq"]), constant_values=pad_token_id) # Let it start off with just the 2048 context tokens, plus some 50256s which will be eventually filled with sampler-chosen tokens
|
||||
generated_index = config["seq"]
|
||||
# Add that information to generate_loop_fn's starting state
|
||||
initial_state = (generated, generated_index, sequence_index) + initial_state
|
||||
return sequence_index+1, initial_state
|
||||
_, initial_states = jax.lax.scan(generate_initial_scan_fn, 0, None, numseqs)
|
||||
sample_key = initial_states[-1][0]
|
||||
initial_states = list(jax.tree_map(lambda x: x[i], initial_states[:-1]) for i in range(numseqs))
|
||||
# Get repetition penalty from the arguments
|
||||
repetition_penalty = sampler_options.pop('repetition_penalty', None)
|
||||
# This is the main generation loop
|
||||
def generate_loop_fn(carry):
|
||||
# Unpack current generate_loop_fn state
|
||||
generated, generated_index, sequence_index, next_token, decode_state = carry[0][0]
|
||||
sample_key = carry[1]
|
||||
# Get the pseudo-random number generator key that will
|
||||
# be used by kobold_sample_static to randomly pick a token
|
||||
sample_key, new_key = jax.random.split(sample_key)
|
||||
# Give the context to the model and get the logits it
|
||||
# spits out
|
||||
# (a 2D array with 1 row and 50400 columns representing
|
||||
# how strongly it thinks each of the 50257 tokens in its
|
||||
# vocabulary should be appended to the context, followed
|
||||
# by 143 apparently useless columns ???)
|
||||
logits, new_state = transformer.generate_once(next_token, decode_state, soft_embeddings=soft_embeddings)
|
||||
# Verify that logits does indeed have that many rows and
|
||||
# columns (if you get an error here, pray for mercy)
|
||||
assert logits.shape == (1, config["n_vocab"])
|
||||
# Flatten it into a 1D array to make it easier to use
|
||||
logits = logits[0]
|
||||
# Apply repetition penalty to all tokens that are
|
||||
# currently inside the "generated" array
|
||||
if repetition_penalty is not None:
|
||||
logits = apply_repetition_penalty_static(
|
||||
logits,
|
||||
generated,
|
||||
repetition_penalty
|
||||
)
|
||||
# Remove any tokens in the badwords list by setting
|
||||
# their logits to negative infinity which effectively
|
||||
# makes their probabilities of being chosen zero
|
||||
logits = logits.at[self.badwords].set(-jnp.inf)
|
||||
# Use the sampler (kobold_sample_static) to pick one token
|
||||
# based on the logits array as a 0D uint32 array
|
||||
# (higher logit means higher probability of being
|
||||
# picked, non-linearly)
|
||||
next_token = kobold_sample_static(
|
||||
sample_key,
|
||||
logits,
|
||||
**sampler_options,
|
||||
)
|
||||
# Remember what token was picked
|
||||
generated = generated.at[generated_index].set(next_token)
|
||||
generated_index += 1
|
||||
# Re-pack the current generate_loop_fn's state so we can
|
||||
# get back the same variables the next time
|
||||
carry[0][0] = (generated, generated_index, sequence_index, next_token[jnp.newaxis], new_state)
|
||||
carry[0].append(carry[0].pop(0))
|
||||
return carry[0], new_key
|
||||
return jax.lax.while_loop(
|
||||
lambda carry: carry[0][0][1] - config["seq"] < gen_length,
|
||||
generate_loop_fn,
|
||||
(initial_states, sample_key),
|
||||
)
|
||||
return generate_sample.apply(state["params"], key, ctx, ctx_length)
|
||||
self.generate_static_xmap = jax.experimental.maps.xmap(
|
||||
fun=generate_static,
|
||||
in_axes=(
|
||||
["shard", ...],
|
||||
["batch", ...],
|
||||
["batch", ...],
|
||||
["batch", ...],
|
||||
["batch", ...],
|
||||
["batch", ...],
|
||||
["batch", ...],
|
||||
["shard", ...],
|
||||
),
|
||||
out_axes=["shard", "batch", ...],
|
||||
axis_resources={'shard': 'mp', 'batch': 'dp'},
|
||||
)
|
||||
def generate_initial(state, key, ctx, ctx_length, numseqs_aux, soft_embeddings=None):
|
||||
numseqs = numseqs_aux.shape[0]
|
||||
@hk.transform
|
||||
|
@ -314,7 +529,7 @@ class PenalizingCausalTransformer(CausalTransformer):
|
|||
out_axes=["shard", "batch", ...],
|
||||
axis_resources={'shard': 'mp', 'batch': 'dp'},
|
||||
)
|
||||
def generate(self, ctx, ctx_length, gen_length, numseqs, sampler_options, return_logits=False, soft_embeddings=None, excluded_world_info=None, use_callback=True):
|
||||
def generate_dynamic(self, ctx, ctx_length, gen_length, numseqs, sampler_options, return_logits=False, soft_embeddings=None, excluded_world_info=None, use_callback=True):
|
||||
assert excluded_world_info is not None
|
||||
assert not return_logits
|
||||
assert gen_length.ndim == 1
|
||||
|
@ -360,9 +575,24 @@ class PenalizingCausalTransformer(CausalTransformer):
|
|||
else:
|
||||
break
|
||||
return sample_data, n_generated, regeneration_required, halt
|
||||
def generate_static(self, ctx, ctx_length, gen_length, numseqs, sampler_options, return_logits=False, soft_embeddings=None):
|
||||
assert not return_logits
|
||||
key = hk.PRNGSequence(random.randint(0, 2 ** 60))
|
||||
batch_size = ctx.shape[0]
|
||||
self.batch_size = batch_size
|
||||
return self.generate_static_xmap(
|
||||
self.state,
|
||||
jnp.array(key.take(batch_size)),
|
||||
ctx,
|
||||
np.array(ctx_length, dtype=np.uint32),
|
||||
np.array(gen_length, dtype=np.uint32),
|
||||
np.empty((batch_size, numseqs), dtype=np.uint8),
|
||||
sampler_options,
|
||||
soft_embeddings,
|
||||
)
|
||||
|
||||
|
||||
def infer(
|
||||
def infer_dynamic(
|
||||
context: np.array,
|
||||
top_p=0.9,
|
||||
temp=0.5,
|
||||
|
@ -394,7 +624,7 @@ def infer(
|
|||
"repetition_penalty": float(repetition_penalty),
|
||||
"top_k": int(top_k),
|
||||
}
|
||||
output = network.generate(
|
||||
output = network.generate_dynamic(
|
||||
batched_tokens,
|
||||
np.ones(total_batch, dtype=np.uint32) * provided_ctx,
|
||||
np.ones(total_batch, dtype=np.uint32) * gen_len,
|
||||
|
@ -408,6 +638,47 @@ def infer(
|
|||
samples.append(out[0][params["seq"] : params["seq"] + gen_len])
|
||||
return (samples,) + output[1:]
|
||||
|
||||
def infer_static(
|
||||
context: np.array,
|
||||
top_p=0.9,
|
||||
temp=0.5,
|
||||
top_k=0,
|
||||
tfs=1.0,
|
||||
repetition_penalty=1.0,
|
||||
numseqs=1,
|
||||
gen_len=80,
|
||||
soft_embeddings: Optional[np.array] = None,
|
||||
soft_tokens: Optional[np.array] = None,
|
||||
) -> List[np.array]:
|
||||
maps.thread_resources.env = thread_resources_env
|
||||
total_batch = 1
|
||||
tokens = context
|
||||
if(soft_tokens is not None):
|
||||
tokens = np.uint32(np.concatenate((soft_tokens, tokens)))
|
||||
provided_ctx = tokens.shape[0]
|
||||
pad_amount = seq - provided_ctx
|
||||
padded_tokens = np.pad(tokens, ((pad_amount, 0),), constant_values=pad_token_id)
|
||||
batched_tokens = np.array([padded_tokens] * total_batch)
|
||||
samples = []
|
||||
batched_generator_params = {
|
||||
"temp": temp * np.ones(total_batch),
|
||||
"top_p": top_p * np.ones(total_batch),
|
||||
"tfs": tfs * np.ones(total_batch),
|
||||
"repetition_penalty": repetition_penalty * np.ones(total_batch),
|
||||
"top_k": np.full(total_batch, top_k, dtype=np.uint32)
|
||||
}
|
||||
output = network.generate_static(
|
||||
batched_tokens,
|
||||
np.ones(total_batch, dtype=np.uint32) * provided_ctx,
|
||||
np.ones(total_batch, dtype=np.uint32) * gen_len,
|
||||
numseqs,
|
||||
batched_generator_params,
|
||||
soft_embeddings=soft_embeddings,
|
||||
)[0]
|
||||
for o in output:
|
||||
samples.append(o[0][0, 0, params["seq"] : params["seq"] + gen_len])
|
||||
return samples
|
||||
|
||||
|
||||
def load_model(path: str, driver_version="tpu_driver0.1_dev20210607", **kwargs) -> None:
|
||||
global thread_resources_env, seq, tokenizer, network, params
|
||||
|
|
Loading…
Reference in New Issue