Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

reduce lmdb mem map size from 1 TB to 128 MB for MNIST data #3644

Closed
wants to merge 2 commits into from
Closed

reduce lmdb mem map size from 1 TB to 128 MB for MNIST data #3644

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
6a8b848
for MNIST data, reduce lmdb memory map size from 1 TB to 128 MB
by321 Feb 5, 2016
3a691e2
The lmdb memory map size was set to 1 TB, on Windows 10 this actually…
by321 Feb 13, 2016
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
4 changes: 2 additions & 2 deletions examples/mnist/convert_mnist_data.cpp
View file
Open in desktop
Expand Up @@ -77,7 +77,7 @@ void convert_dataset(const char* image_filename, const char* label_filename,
leveldb::Options options;
options.error_if_exists = true;
options.create_if_missing = true;
options.write_buffer_size = 268435456;
options.write_buffer_size = 128*1024*1024;
leveldb::WriteBatch* batch = NULL;

// Open db
Expand All @@ -93,7 +93,7 @@ void convert_dataset(const char* image_filename, const char* label_filename,
CHECK_EQ(mkdir(db_path, 0744), 0)
<< "mkdir " << db_path << "failed";
CHECK_EQ(mdb_env_create(&mdb_env), MDB_SUCCESS) << "mdb_env_create failed";
CHECK_EQ(mdb_env_set_mapsize(mdb_env, 1099511627776), MDB_SUCCESS) // 1TB
CHECK_EQ(mdb_env_set_mapsize(mdb_env, 128*1024*1024), MDB_SUCCESS)
<< "mdb_env_set_mapsize failed";
CHECK_EQ(mdb_env_open(mdb_env, db_path, 0, 0664), MDB_SUCCESS)
<< "mdb_env_open failed";
Expand Down