diff options
Diffstat (limited to 'klm/lm/binary_format.cc')
| -rw-r--r-- | klm/lm/binary_format.cc | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/klm/lm/binary_format.cc b/klm/lm/binary_format.cc index 92b1008b..e02e621a 100644 --- a/klm/lm/binary_format.cc +++ b/klm/lm/binary_format.cc @@ -40,7 +40,7 @@ struct Sanity { } }; -const char *kModelNames[3] = {"hashed n-grams with probing", "hashed n-grams with sorted uniform find", "bit packed trie"}; +const char *kModelNames[6] = {"hashed n-grams with probing", "hashed n-grams with sorted uniform find", "trie", "trie with quantization", "trie with array-compressed pointers", "trie with quantization and array-compressed pointers"}; std::size_t Align8(std::size_t in) { std::size_t off = in % 8; @@ -100,16 +100,17 @@ uint8_t *SetupJustVocab(const Config &config, uint8_t order, std::size_t memory_ } } -uint8_t *GrowForSearch(const Config &config, std::size_t memory_size, Backing &backing) { +uint8_t *GrowForSearch(const Config &config, std::size_t vocab_pad, std::size_t memory_size, Backing &backing) { + std::size_t adjusted_vocab = backing.vocab.size() + vocab_pad; if (config.write_mmap) { // Grow the file to accomodate the search, using zeros. - if (-1 == ftruncate(backing.file.get(), backing.vocab.size() + memory_size)) - UTIL_THROW(util::ErrnoException, "ftruncate on " << config.write_mmap << " to " << (backing.vocab.size() + memory_size) << " failed"); + if (-1 == ftruncate(backing.file.get(), adjusted_vocab + memory_size)) + UTIL_THROW(util::ErrnoException, "ftruncate on " << config.write_mmap << " to " << (adjusted_vocab + memory_size) << " failed"); // We're skipping over the header and vocab for the search space mmap. mmap likes page aligned offsets, so some arithmetic to round the offset down. off_t page_size = sysconf(_SC_PAGE_SIZE); - off_t alignment_cruft = backing.vocab.size() % page_size; - backing.search.reset(util::MapOrThrow(alignment_cruft + memory_size, true, util::kFileFlags, false, backing.file.get(), backing.vocab.size() - alignment_cruft), alignment_cruft + memory_size, util::scoped_memory::MMAP_ALLOCATED); + off_t alignment_cruft = adjusted_vocab % page_size; + backing.search.reset(util::MapOrThrow(alignment_cruft + memory_size, true, util::kFileFlags, false, backing.file.get(), adjusted_vocab - alignment_cruft), alignment_cruft + memory_size, util::scoped_memory::MMAP_ALLOCATED); return reinterpret_cast<uint8_t*>(backing.search.get()) + alignment_cruft; } else { |