llnl/UnifyFS

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UnifyFS: A file system for burst buffers

Stars: 122
Forks: 34
Open beginner issues: 0
Indexed issues: 100

Dominant language: C
License: No license data
Last GitHub push: Sep 29, 2025
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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100 open issues indexed

unifyfs in containerized environment ( apptainer ) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

llnl/UnifyFS#826 · Opened Jan 13, 2026
Compile error with GCC 13 Open

build system

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/UnifyFS#825 · Opened Sep 27, 2025
pread() tests fail with GCC 12 and 13 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#824 · Opened Sep 15, 2025
Issues/bugs observed when running real applications at large scales Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#812 · Opened Apr 9, 2024
Making timeout units consistent Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#811 · 1 comment · Opened Apr 2, 2024
Potential deadlock caused by concurrent sync calls Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#810 · Opened Mar 19, 2024
Double finalization when using application interface in test programs Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

llnl/UnifyFS#809 · Opened Mar 7, 2024
Concurrency bug in test_remove_file() Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

llnl/UnifyFS#808 · Opened Mar 7, 2024
NC_CLOBBER leads to delayed unlink problem Open

pnetcdf

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#784 · Opened Jul 11, 2023
PnetCDF test leads to margo error, which leads to hang in ROMIO Open

pnetcdf

Difficulty 4/5 3-5 days Newbie friendliness 25/100

llnl/UnifyFS#783 · Opened Jul 7, 2023
MPI collective I/O and UnifyFS Open

pnetcdf

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/UnifyFS#781 · 12 comments · Opened Jun 30, 2023
Avoiding spill over for read-only clients Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#768 · Opened May 2, 2023
Transfert status file is mandatory for unifyfs-stage? Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

llnl/UnifyFS#763 · Opened Apr 5, 2023
Probable Incorrect Error Handling in collective_create() Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

llnl/UnifyFS#761 · Opened Mar 10, 2023
PnetCDF mcoll_perf detects incorrect data Open

pnetcdf

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

llnl/UnifyFS#757 · Opened Jan 12, 2023
PnetCDF large_coalesce test fails due to incorrect data on read (ROMIO problem) Open

pnetcdf

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#752 · Opened Dec 28, 2022
PnetCDF unlink race condition in nc_test Open

pnetcdf

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#744 · Opened Dec 1, 2022
UnifyFS Client Timeouts at rpc for unifyfs_dispatch_transfer with MOVE and unifyfs_finalize Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

llnl/UnifyFS#741 · Opened Nov 8, 2022
Lua plugin for SLURM integration Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#740 · Opened Nov 7, 2022
autogen.sh fails when using v1.0.tar.gz Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

llnl/UnifyFS#735 · 1 comment · Opened Sep 2, 2022
Newer glibc needs to have all variables be size_t even those which are computed into other variables. Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

llnl/UnifyFS#731 · Opened Aug 16, 2022
preload: copy timestamps with cp -p Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#729 · 2 comments · Opened Aug 4, 2022
Migrating data between Unifyfs servers Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/UnifyFS#728 · Opened Aug 4, 2022
Making headers and source public for tools within Unifyfs. Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

llnl/UnifyFS#726 · Opened Jul 20, 2022
add MPI_File_fence Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

llnl/UnifyFS#706 · Opened Feb 11, 2022
Lustre group lock API Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/UnifyFS#702 · Opened Dec 23, 2021
operating on previously deleted file Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

llnl/UnifyFS#692 · Opened Sep 20, 2021
Memory leaks in configurator Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#688 · 2 comments · Opened Sep 15, 2021
optimization: allow a single open/create call for N parallel processes Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

llnl/UnifyFS#678 · Opened Aug 31, 2021
slow client can make unifyfsd assert Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#668 · 2 comments · Opened Aug 12, 2021
opt: allgather extents on laminate Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/UnifyFS#658 · 1 comment · Opened Aug 2, 2021
use file-based barrier for keyval fence and pids file Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/UnifyFS#650 · 2 comments · Opened Jul 20, 2021
Support C++ fstreams Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

llnl/UnifyFS#649 · 1 comment · Opened Jul 20, 2021
Feature request: allow app developer to determine if UnifyFS filesystem is mounted Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#648 · 3 comments · Opened Jul 19, 2021
Additional libs needed to link Unify application Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

llnl/UnifyFS#621 · Opened Apr 21, 2021
Can we eliminate the test_might_fail in the last test of t/0700-unifyfs-stage-full.t Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

llnl/UnifyFS#616 · 3 comments · Opened Apr 19, 2021
Document a fallback for CMA (cross memory attach) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

llnl/UnifyFS#600 · 1 comment · Opened Jan 25, 2021
is_dir_empty only scans local file list for child items Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#590 · Opened Dec 11, 2020
sync-barrier-sync in MPI I/O tests Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

llnl/UnifyFS#589 · Opened Dec 9, 2020
Example to document a consistency problem in HDF5 file with parallel execution in Unify Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#588 · Opened Dec 9, 2020
Example to create and access a PHDF5 dataset under Unify Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

llnl/UnifyFS#577 · 17 comments · Opened Nov 23, 2020
More reliable server bootstrapping at scale Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/UnifyFS#568 · 2 comments · Opened Nov 9, 2020
Slow reads from remote nodes, based on HDF5 fltread test Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/UnifyFS#562 · 7 comments · Opened Nov 2, 2020
Problem in Unify/MPI-IO reading data across a "boundary" between two previously written ranges in a file Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

llnl/UnifyFS#560 · 20 comments · Opened Oct 12, 2020
Optimizing ibverbs network performance Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

llnl/UnifyFS#556 · Opened Aug 17, 2020
Problem to handle 4GB file Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

llnl/UnifyFS#551 · 7 comments · Opened Aug 3, 2020
Problem with MPI-IO's shared file pointer Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#549 · 8 comments · Opened Aug 3, 2020
Problem with strided writes by multiple ranks Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#547 · 29 comments · Opened Jul 30, 2020
Problem with MPI-IO's atomic file I/O Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

llnl/UnifyFS#544 · 6 comments · Opened Jul 28, 2020
Problem with MPI_File_preallocate Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/UnifyFS#543 · 4 comments · Opened Jul 26, 2020

llnl/UnifyFS

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