Cudf: [BUG] libcudf tests failing under `cuda-memcheck`

[jrhemstad]

Describe the bug

Several libcudf tests are failing when run under cuda-memcheck. These may be serious or they may be spurious. We should diagnose.

• COLUMN_TEST
• COPYING_TEST
• DEVICE_ATOMICS_TEST
• DICTIONARY_TEST
• ERROR_TEST (I believe this one is expected.)
• ORC_TEST

Expected behavior

These tests shouldn't fail when run under cuda-memcheck.

This reminds me that we should revisit: https://github.com/rapidsai/cudf/issues/904

[davidwendt]

Created PR #4612 to fix cuda-memcheck error for DICTIONARY_TEST

[davidwendt]

Created PR #4614 to fix COLUMN_TEST and COPYING_TEST

[OlivierNV]

ORC_TEST is a real bug (potential 3-byte OOB write in compression of random data ~ trivial fix, but probably would be good to have in 0.13). PR coming up.

[davidwendt]

@jrhemstad
All of these have been fixed except for the ERROR_TEST one.
That one purposely produces a kernel launch error which I don't think cuda-memcheck likes very much.

[jrhemstad]

@jrhemstad
All of these have been fixed except for the ERROR_TEST one.
That one purposely produces a kernel launch error which I don't think cuda-memcheck likes very much.

Awesome. Thanks @davidwendt and @OlivierNV for jumping on these.