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charmplusplus / charm

The Charm++ parallel programming system. Visit https://charmplusplus.org/ for more information.
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Manytomany on PAMI SMP hangs without Async #81

Closed nikhil-jain closed 5 years ago

nikhil-jain commented 11 years ago

Original issue: https://charm.cs.illinois.edu/redmine/issues/81

charm++/penciltest and NAMD with optPME/manytomany set to 1 hangs for SMP (without async). ASYNC works

PhilMiller commented 5 years ago

Original date: 2013-03-25 15:22:20

Sameer confirmed the issue and said he will fix it:

I looked at the manytomany implementation and its broken for SMP w/o ASYNC. I will fix this asap. Please use manytomany with ASYNC enable till I can fix that.

PhilMiller commented 5 years ago

Original date: 2013-03-29 22:25:00

Sameer's not registered here, so we can't just assign it to him. He is upstream for this in a sense, though, so set that to indicate that it's not on our plate.

PhilMiller commented 5 years ago

Original date: 2013-04-14 01:15:06

Any word from Sameer about progress on this?

pplimport commented 5 years ago

Original author: Yanhua Sun Original date: 2013-04-14 19:58:25

I have not heard anything back from Sameer

PhilMiller commented 5 years ago

Original date: 2013-10-09 20:53:40

Short-term change noted in #302. Keeping this open and future-targeted for long-term fix.

pplimport commented 5 years ago

Original author: Yanhua Sun Original date: 2013-10-11 03:44:55

Temporary solution is to force user compile charm with async if they use many to many. Other abort.

For all many-to-many interface, I added the following

if CMK_SMP && !CMK_ENABLE_ASYNC_PROGRESS

CmiAbort("!!!!!!!!!Please build Charm++ with async in order to use many-to-many interface\n");

else

do work

endif

PhilMiller commented 5 years ago

Original date: 2013-10-11 03:49:06

I split the checking off to #302 so that we can clearly track our interactions with IBM over this issue here.

ericjbohm commented 5 years ago

Original date: 2018-12-06 21:11:10

Old CkDirect based version slated for removal. PAMI support for this appears to be dead. Basic idea needs reconstruction in context of zerocopy.