[mvapich-discuss] Registration cache problem

[alex.i.melnikov at gmail.com]

Perhaps the problem is with the delayed registration. A small patch (in the attachment) solved the problem for me, but I'm not sure of its correctness.
Best regards, Alexander Melnikov.
From: Subramoni, Hari
Sent: Monday, June 29, 2020 4:46 PM
To: Alexander Melnikov ; mailto:mvapich-discuss at mailman.cse.ohio-state.edu 
Cc: Subramoni, Hari
Subject: RE: [mvapich-discuss] Registration cache problem

Hi, Alexander.



Thanks for reporting the issue. We appreciate it.



We are able to reproduce it. We are looking into it and will get back to you.



Best,

Hari.



From: mvapich-discuss-bounces at cse.ohio-state.edu <mvapich-discuss-bounces at mailman.cse.ohio-state.edu> On Behalf Of Alexander Melnikov
Sent: Monday, June 29, 2020 1:07 AM
To: mvapich-discuss at cse.ohio-state.edu <mvapich-discuss at mailman.cse.ohio-state.edu>
Subject: [mvapich-discuss] Registration cache problem



Hey. Can anyone check out a little test (in the attachment)? On each node, one MPI process starts, a small number of nodes is enough (3-6). We used the MVAPICH2 library versions 2.3.3 and 2.3.4, the compiler - GCC 4.8.5.
Almost all tests fail (bad data in rcv_thread). However, when the registration cache is disabled (MV2_USE_LAZY_MEM_UNREGISTER = 0), the error disappears.




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