Made it possible to recover from overloaded GPUs
Made it possible to recover from overloaded GPUs


Former-commit-id: 3f89652d83024306dc5241690b78b2cae537549f
clab/cnn,xunzhang/dynet,danielhers/dynet,clab/dynet,chunyang-wen/dynet,clab/dynet,xunzhang/dynet,shuheik/dynet,danielhers/dynet,xunzhang/dynet,shuheik/dynet,xunzhang/dynet,chunyang-wen/dynet,chunyang-wen/dynet,danielhers/dynet,danielhers/dynet,clab/dynet,danielhers/dynet,chunyang-wen/dynet,danielhers/dynet,clab/cnn,shuheik/dynet,shuheik/dynet,shuheik/dynet,clab/cnn,clab/dynet,shuheik/dynet,clab/dynet,clab/dynet,danielhers/dynet,shuheik/dynet,clab/dynet