Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.
On top of our initial Quake 4 v1.2.1 SMP article, which shares some information with our investigation thus far for the Hyper-Threading and multi-core support, we have learned some new information today. On top of the finite performance, there appears to be some in-game issues with the SMP binary. When attempting to connect to a multiplayer server with the quake4smp binary, the game with v1.2.1 is known to produce a segmentation fault. This issue can be potentially fixed by using the r_useSMP 0 command to disable the SMP feature, and then once connected to server it can be re-enabled. We have also received a report that when switching weapons when running the quake4smp binary, the game had froze. The problem had also persisted with the SMP version even after binding the process to a single processor -- which would eliminate the effect of Symmetric Multi-Processing. We still have yet to receive an official word from id Software on any SMP matters.