Greg Eisenhauer

Hi. So, the "Writer failed before returning data." is from the EVPath (WAN, sockets) dataplane. You'll get that if the writer side exits before the reader gets the data. Generally...

Sorry for the delay in responding. Looking at the logs, the QueueLimit isn't coming into play here. Generally the writer-side queue can build up if the reader isn't reading timesteps...

Just looking for something that might pop up and tell you if you got a segfault or something, I'd look at ddt or valgrind4hpc on frontier. ddt would be more...

> How about building with address sanitizer? Also a good idea. Building app and ADIOS with -fsanitize=address wouldn't be nearly as slow as valgrind. (However, my lazy tendencies usually lead...

These tools are only meant for developer use and little attention has been paid to error handling. While bp4dbg is relatively complete, bp5dbg is vastly less capable, mostly due to...

Hmm. attribute_writing_ranks seems to be an openpmd thing, not an ADIOS thing, so I don't know what that does. Can I ask what version of ADIOS you are running with?...

The newest metadata aggregation methods do several things differently, including doing separate gathers on different types of information. BP5 tries hard to optimize the case where nothing much has changed...

> @pnorbert @eisenhauer can you take a look at this? > > @franzpoeschel and I wonder if this is a performance bug that rather should be fixed in ADIOS2. IMHO,...