There seems to be an unknown race on multiprocessing environment with sparse file cache, and maybe with temporary directory. The workaround for this issue is to explicitly define the cache directory. In cases where the cache is not on temporary directory, it seems well working.
There seems to be an unknown race on multiprocessing environment with sparse file cache, and maybe with temporary directory. The workaround for this issue is to explicitly define the cache directory. In cases where the cache is not on temporary directory, it seems well working.
Addresses https://github.com/pfnet/pfio/issues/294 .