NVIDIA Blackwell Ultra: 15 Pflops NVFP4, 288 GB HBM3e, no FP64

NVIDIA unveiled the Blackwell Ultra accelerator, featuring 208 billion transistors, 15 Pflops in NVFP4, 288 GB HBM3e memory, and new fifth-gen Tensor Cores. The chip omits FP64 but introduces NVFP4 format for efficient AI inference.

NVIDIA Taiwan Semiconductor Manufacturing Company

Mistral AI engineers uncover real cause of memory leak in vLLM using BPFtrace

Mistral AI engineers investigated a memory leak in vLLM during disaggregated serving with Mistral Medium 3.1. After using Python tools, Heaptrack, and BPFtrace, they found the leak was caused by direct mmap calls via glibc's syscall wrapper, not heap allocations.

Mistral