Managing Barista and Janitor @proprietor

1 post1 participant0 posts today

Replied in thread

**Felix Palmen** @zirias@bsd.cafe · 3d

Felix Palmen @zirias@bsd.cafe

Fixed cancelling a thread job in #poser's #threadpool. Using a semaphore to do this seems reliable

Oh my. #Multithreading, #synchronization, async #Unix #signals, this is pure "fun" ...

https://github.com/Zirias/poser/commit/aa4e02b728a549f0e3c4687750b90749d48fcfdc

Relying on the signal to set a flag is *not* reliable for cancellation,
because the signal might be delivered delayed. Use a semaphore instead
that's post'ed for cancellation.

Still send t...

GitHubThreadPool: Fix cancelling a thread job · Zirias/poser@aa4e02bRelying on the signal to set a flag is *not* reliable for cancellation, because the signal might be delivered delayed. Use a semaphore instead that's post'ed for cancellation. Still send t...

#C #coding

**Dr. Moritz Lehmann** @ProjectPhysX@mast.hpc.social · Mar 9

Mar 9

Dr. Moritz Lehmann @ProjectPhysX@mast.hpc.social

#FluidX3D #CFD v3.2 is out! I've implemented the much requested #GPU summation for object force/torque; it's ~20x faster than #CPU #multithreading.
Horizontal sum in #OpenCL was a nice exercise - first local memory reduction and then hardware-supported atomic floating-point add in VRAM, in a single-stage kernel. Hammering atomics isn't too bad as each of the ~10-340 workgroups dispatched at a time does only a single atomic add.
Also improved volumetric #raytracing!
https://github.com/ProjectPhysX/FluidX3D/releases/tag/v3.2