Unit Tests hang and fail on dev branch

Xilinx / ACCL

Alveo Collective Communication Library: MPI-like communication operations for Xilinx Alveo accelerators

https://accl.readthedocs.io/

Apache License 2.0

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Unit Tests hang and fail on dev branch #169

Closed Mellich closed 1 year ago

Mellich commented 1 year ago

Some of the unit tests hang in the dev branch for higher number of ranks (tested with 10):

ACCLTest.test_alltoall
ACCLTest.test_barrier
ACCLTest.test_multicomm
reduction_tests/ACCLFuncTest.test_allreduce/*
reduction_tests/ACCLFuncTest.test_allreduce_compressed/*

Moreover, some other tests in ACCLFuncTest.* are failing.

Mellich commented 1 year ago

Fix failing tests in #170

quetric commented 1 year ago

Some tests hang for smaller number of ranks too, and different tests hang for different backends (UDP/TCP/RDMA). At least for alltoall and barrier, the cause is that the collective, as currently implemented in firmware, requires RDMA.