spike mobile_net failed about gemmini HOT 6 CLOSED

@hngenc
Oh, I did not see there are submodules. Now the problem fixed. Thanks.

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Use chipyard at version 1.3.0 and not at 1.4.0 (lastest version).

I got the same problem when simulating mobilenet-baremetal. It seems like a problem with rs1 value in a custom3 instruction when used to configure Gemmini. According to the documentation, the new_acc_shift variable should be in bits [63:32] of rs1. However, the value in this field was 0x3c000000, which is much bigger than sizeof(acc_t)*8. I believe the problem is related to the preprocessor macros used to encode gemmini operations in gemmini.h.

from gemmini.

Yes, unfortunately, it seems the preprocessor macros were broken. I would recommend switching over to the dev branch of Gemmini, where these issues have been resolved (we probably won't bump master till Chipyard gets another major release).

If you do want to use the dev branch, then you can check the CHIPYARD.hash and SPIKE.hash files, which will tell you exactly which Chipyard and which Spike commit you need to be on.

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I switched to the dev branch and checkout to the commit from hash files. I recompiled and installed the spike. When I was running the test, I received the following output.

Is this "CORRECT" output? Or I missed something after checkout to the commit you mentioned above.

from gemmini.

@AaronJing Are you sure you remembered to git submodule update after pulling dev? The following command seems to have worked for me:

spike --extension=gemmini build/imagenet/mobilenet-baremetal

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@AaronJing

Great, thanks for the update!

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