BTD Issue in ADIOS2

[ax3l]

In the latest development, Chris (PhD student at BELLA) gets the following error with a BTD simulation of WarpX:

and it runs for ~900 steps and then I get an error about the back transformed diagnostics:

STEP 902 starts ...
--- INFO    : Writing buffer 3 of 16 to snapshot 2 to openPMD BTD diags/diag1
amrex::Abort::0::
### ERROR   : WarpX openPMD ADIOS2 work-around has unknown dtype: INT
#            (/global/homes/c/cmccombs/src/warpx/Source/Diagnostics/WarpXOpenPMD.cpp:845)
 !!!
SIGABRT

it runs fine on 1 gpu

attn @guj , could be related to our recent changes in #6123

[ax3l]

Ah, I see it and will submit a PR.