Conglong Li 68c8481bcf 1-bit Adam v2 (#817) ... Authors: @awan-10 @conglongli @samyam @jeffra What's new: NCCL-based implementation which provides better performance and usability compared to the MPI-based implementation. Add support to momentum masks for those parameters with constant zero gradients during training. Bug fixes (e.g., #813). * NCCL-based 1-bit Adam + Code Refactor for Comm. Backends (#594) * NCCL based 1-bit Implementation + Refactor to add communication backends (#593) * add nccl 1-bit optim. * temporary commit to save stuff. * Use dist collectives instead of mpi routines. * remove old code for comm. * Fix bugs. still does not work. * modify to test the nccl side code path * Initial gather impl. Works intra-node. * Updates to comm. phase 2. nccl comm. passed the tests. * refactor code to introduce nccl/mpi as backends for onebit adam. * Refactor updates to test/engine. * Fix compile/runtime errors. * simplify support for nccl/mpi backends. * Add missign file * Add compression backend in constructor. Revert later. * modify test with some perf counting. * Implement a true non-blocking gather for nccl side. * Revert "Add compression backend in constructor. Revert later." This reverts commit df8c40d310. * improve the 1-bit adam test. * Refactor comm. and compression backend in 1-bit adam. * Fix the test. * Fix runtime errors and typos in nccl backend * fix mpi backend. modify tests. * modify nccl perf test. * fix mpi side errors. * Add an mpi perf test * Sync DSE. * Remove old collectives file. * Undo a typo. * Graceful failure for torch versions that don't support nccl pt2pt. * Revert "Merge branch 'master' into staging-1bit-nccl-v2" This reverts commit 7840085070, reversing changes made to a6dba72aea. * Revert "Revert "Merge branch 'master' into staging-1bit-nccl-v2"" This reverts commit 6dbdd9858b. * comm optimization + 1-bit lamb * Saving/debugging commit. * finalizing 1-bit lamb * finalizing 1-bit lamb * add momentum mask and chkpt handling for 1-bit adam * Cleanup and modify nccl test to be runnable with deepspeed launcher. * Fix format. * fix formatting again. * make test runnable without mpi4py * Add dist.alltoall and dist.allgather instead of custom functions. * remove debug prints. * formatting and renaming * renaming * renaming * add unit test, fix existing tests * skip unit test when torch < 1.8 * revert 1-bit lamb * flatten momentum when dimension is more than 1 * add warning message for 1-bit adam under fp32 * improve version check * add fp32 test * 1-bit adam doc * fix file name * doc fix * torch 1.8 is released * doc fix * fix tests * update news * add doc for momentum mask * fix checkpoing handling, add unit test * checkpoint handling doc * doc final cleanup * bump dates * update tests * url change * doc fix * fix test * doc update Co-authored-by: Ammar Ahmad Awan <ammar.awan@microsoft.com> Co-authored-by: Jeff Rasley <jerasley@microsoft.com>		2021-03-16 16:27:20 -07:00
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test_mpi_backend.py	1-bit Adam v2 (#817)	2021-03-16 16:27:20 -07:00
test_mpi_perf.py	1-bit Adam v2 (#817)	2021-03-16 16:27:20 -07:00
test_nccl_backend.py	1-bit Adam v2 (#817)	2021-03-16 16:27:20 -07:00
test_nccl_perf.py	1-bit Adam v2 (#817)	2021-03-16 16:27:20 -07:00