Hi there, I'm using HDF5 files as a data storage format for a low-traffic web application, which is built in Pyramid (Python framework) and running on the Waitress WSGI server. We have encountered a nasty bug where if multiple requests (threads) concurrently read different HDF5 files, the server crashes with a segmentation fault. The crash is definitely thread-related, because the bug vanishes if we restrict the server to be single-threaded.
Note that the crash does not occur when multiple threads read the *same* HDF5 file. Only when multiple HDF5 files are being accessed simultaneously. We have built libhdf5 (version 1.8.16) with --enable-threadsafe turned on; the ttsafe tests run successfully. Any help in resolving the bug would be much appreciated. Best regards, Yoshua Wakeham ______________________________________________________________________ The information in this email is confidential and intended solely for the addressee. You must not disclose, forward, print or use it without the permission of the sender. ______________________________________________________________________ _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org Twitter: https://twitter.com/hdf5
