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llama : produce error upon loading old model files

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This commit is contained in:
Georgi Gerganov
2023-05-09 18:19:13 +03:00
parent 0e48eb6f6b
commit 4201fa5cb8
2 changed files with 14 additions and 3 deletions
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15
llama.cpp
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@@ -402,6 +402,7 @@ enum llama_file_version {
LLAMA_FILE_VERSION_GGML,
LLAMA_FILE_VERSION_GGMF_V1, // added version field and scores in vocab
LLAMA_FILE_VERSION_GGJT_V1, // added padding
LLAMA_FILE_VERSION_GGJT_V2, // changed quantization format
};
struct llama_file_loader {
@@ -432,6 +433,8 @@ struct llama_file_loader {
file_version = LLAMA_FILE_VERSION_GGMF_V1;
} else if (magic == 'ggjt' && version == 1) {
file_version = LLAMA_FILE_VERSION_GGJT_V1;
} else if (magic == 'ggjt' && version == 2) {
file_version = LLAMA_FILE_VERSION_GGJT_V2;
} else {
throw format("unknown (magic, version) combination: %08x, %08x; is this really a GGML file?",
magic, version);
@@ -837,8 +840,8 @@ static const char *llama_file_version_name(llama_file_version version) {
switch (version) {
case LLAMA_FILE_VERSION_GGML: return "'ggml' (old version with low tokenizer quality and no mmap support)";
case LLAMA_FILE_VERSION_GGMF_V1: return "ggmf v1 (old version with no mmap support)";
case LLAMA_FILE_VERSION_GGJT_V1: return "ggjt v1 (latest)";
default: LLAMA_ASSERT(false);
case LLAMA_FILE_VERSION_GGJT_V1: return "ggjt v1 (pre #1305)";
case LLAMA_FILE_VERSION_GGJT_V2: return "ggjt v2 (latest)";
}
}
@@ -915,6 +918,14 @@ static void llama_model_load_internal(
fprintf(stderr, "%s: model size = %s\n", __func__, llama_model_type_name(model.type));
}
if (file_version != LLAMA_FILE_VERSION_GGJT_V2) {
if (hparams.ftype != LLAMA_FTYPE_ALL_F32 &&
hparams.ftype != LLAMA_FTYPE_MOSTLY_F16 &&
hparams.ftype != LLAMA_FTYPE_MOSTLY_Q8_0) {
throw format("this format is no longer supported (see https://github.com/ggerganov/llama.cpp/pull/1305)");
}
}
if (vocab_only) {
return;
}

2
llama.h
View File

@@ -19,7 +19,7 @@
# define LLAMA_API
#endif
#define LLAMA_FILE_VERSION 1
#define LLAMA_FILE_VERSION 2
#define LLAMA_FILE_MAGIC 'ggjt'
#define LLAMA_FILE_MAGIC_UNVERSIONED 'ggml'
#define LLAMA_SESSION_MAGIC 'ggsn'