Intel’s mobile CPUs have undergone massive changes over the past couple generations as Intel defends its laptop market against AMD, Qualcomm, and to a lesser extent Apple.
I remember there being notes here about how slow the runs of cactuBSSN were and maybe on the Skymont report as well. It seems the problem might not be compiler or hardware related but a weird regression in mmap in the Linux kernel since 2023 that was recently resolved.
It would be interesting for a follow up article about the technical reasons why the natural idea of aligning things caused a regression and more testing.
I remember there being notes here about how slow the runs of cactuBSSN were and maybe on the Skymont report as well. It seems the problem might not be compiler or hardware related but a weird regression in mmap in the Linux kernel since 2023 that was recently resolved.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d4148aeab412432bf928f311eca8a2ba52bb05df
It would be interesting for a follow up article about the technical reasons why the natural idea of aligning things caused a regression and more testing.
Great review but doesn't seem like the desktop implementation is gonna perform as expected for some reason