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Here's a fresh look at the GCC vs. Clang C/C++ compiler performance of various resulting application binaries tested on x86_64. GCC 13 vs. Clang 17 were tested as what's readily available on Ubuntu 23.10 Linux plus a look ahead in using the latest GCC 14 and LLVM Clang 18 development snapshots as of this week.

From the sky to the sea, and even inside our bodies, a simulator from Georgia Tech is helping us better understand aerodynamic fluid flows. And thanks to Frontier, the world’s fastest supercomputer, the simulator is even better.

Spencer Bryngelson’s research group manages the Multi-Component Flow Code (MFC) software package. His group was one of ten teams selected by Oak Ridge Leadership Computing Facility (OLCF) to optimize their simulator in a recent hackathon. 

The Standard Performance Evaluation Corporation (SPEC), the trusted global leader in computing benchmarks, today announced the availability of the SPECaccel 2023 benchmark suite, a major update to the SPEC ACCEL v1.4 benchmark. The SPECaccel 2023 benchmark suite measures the performance of key system components using computationally intensive parallel applications running under the OpenACC and OpenMP target offloading APIs.

While the next revision of the C standard won't see its formal publishing until the 2024 calendar year, the ISO C standards committee already decided on keeping "C23" as the informal name for this next major C update. As such, with today's GCC 14 Git the -std=c23 compiler option for targeting C23 is now honored along with -std=gnu23 for the GNU dialect of C23.