Build the newest Caffe with Multi-GPU support about caffe-builder HOT 8 CLOSED

Hi @gucan-long . You need a caffe branch that has both my changes to support Windows and those of BLVC to support multi-gpu. In git lingo you need to fork either BLVC's or my caffe repository and apply the changes from the other repository:

One way of doing this would be:

# first clone your own caffe fork
git clone https://github.com/gucan-long/caffe.git caffe
cd caffe
# update to BLVC upstream
git remote add upstream https://github.com/BLVC/caffe.git
git fetch upstream
git checkout master
git merge upstream/master 
# add willyd's work as another remote
git remote add willyd https://github.com/willyd/caffe.git
git fetch willyd
# branch off BLVC master
git checkout -b multigpu
# merge in the changes from willyd's branch
git merge willyd/visualstudio
# resolve any conflicts
git add <resolved files>
git commit
git push origin

Then change the GIT_REPOSITORY to your own repo and the GIT_TAG to multigpu. Please note that I could be wrong in the above git commands. I did not test them, but you get the idea. You can refer to github's documentation to know how to sync a fork.

Let me know if you succeed or not.

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Hi @willyd , thank you very much for your detailed reply.

I tried as you suggested, but failed. The problem lies in the new added file of caffe/src/caffe/util/signal_handler.cpp. In which the signal-related functions (e.g. sigfillset()) lack supports in Windows. If possible, could you please have a look at it and kindly give some further suggestions?

Many thanks!

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Yeah I briefly mentioned a possible solution in the PR comments for Windows but did not have time to integrate this change in my fork.

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Hi @willyd thanks for your reply. By "a possible solution in the PR comments", could you please give me a url of it? Maybe I could have a try.

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Here is the PR link. My "potential solution" is very brief though: BVLC/caffe#2253.

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@willyd
You may refer to my modification https://github.com/happynear/caffe-windows/blob/master/src/caffe/util/signal_handler.cpp .
There is no SIGHUP in windows. However, I like the "snapshot whenever I want" feature. So I use SIGBREAK to replace SIGHUP.

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@gclong My fork now was the latest changes integrated. See branc msvc

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Hi @willyd . That is great! Thank you so much!

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