Hi,
We tried debugging the issue related to FA caches:
We found out that we get the segmentation fault due to the following
line in cache_impl.hh file
" if (pkt->isRead()) {
// Segmentation fault here...
std::memcpy(blk->data, pkt->getPtr<uint8_t>(), blkSize);
}
"
I guess this is because of the different findVictim method
implementation in the fa_lru code.
However, we could not debug this issue completely, could you tell us
where to find the actual source of this error ?
Thanks,
Siddharth
----- Original Message -----
From: "nathan binkert" <[email protected]>
To: "M5 users mailing list" <[email protected]>
Sent: Thursday, June 4, 2009 2:01:14 PM GMT -08:00 US/Canada Pacific
Subject: Re: [m5-users] Fully associative
> When i set my associativity = l2 size/block size (in my case L2 is 512k and
> block is 64 so assoc is 8192) I get segmentation fault.
> However assoc of 4096 works. So i am not able to make it fully associative.
>
> I don't think I specifically need to change anything else. numSets in the
> builder code gets set to 1 according to the formula above.
The fully associative code is different from the normal cache code and
I don't think it's used much, so it's entirely possible that there's
some bit rot going on here. Perhaps you can spend a little time
debugging it. We can help figure it out.
Nate
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