Hello Matthew Poremba, Bradford Beckmann, Xianwei Zhang, Anthony Gutierrez,
Jason Lowe-Power, Nikos Nikoleris,
I'd like you to reexamine a change. Please visit
https://gem5-review.googlesource.com/c/public/gem5/+/17568
to look at the new patch set (#2).
Change subject: mem-ruby: Fix MOESI_CMP_directory blocked line handling
......................................................................
mem-ruby: Fix MOESI_CMP_directory blocked line handling
Using recycle in the L2 controllers to put messages back into the buffer
may lead to starvation when there are many L1 requests for the same line.
This can easily trigger the deadlock detection mechanism in configurations
with many cores (16+). Replacing recycle by stall_and_wait for L1
requests avoids this issue. wakeUpBuffers calls were added to all
transitions from transient to stable states.
Change-Id: I28b8aeacc48919ccf38e69653cd9205a4153514b
Signed-off-by: Tiago Muck <[email protected]>
---
M src/mem/protocol/MOESI_CMP_directory-L2cache.sm
1 file changed, 67 insertions(+), 10 deletions(-)
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: I28b8aeacc48919ccf38e69653cd9205a4153514b
Gerrit-Change-Number: 17568
Gerrit-PatchSet: 2
Gerrit-Owner: Tiago Mück <[email protected]>
Gerrit-Reviewer: Anthony Gutierrez <[email protected]>
Gerrit-Reviewer: Bradford Beckmann <[email protected]>
Gerrit-Reviewer: Jason Lowe-Power <[email protected]>
Gerrit-Reviewer: Matthew Poremba <[email protected]>
Gerrit-Reviewer: Nikos Nikoleris <[email protected]>
Gerrit-Reviewer: Tiago Mück <[email protected]>
Gerrit-Reviewer: Xianwei Zhang <[email protected]>
Gerrit-MessageType: newpatchset
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