With more countries creating initiatives to develop homegrown processors capable of powering powerful supercomputing facilities, India has just presented its development milestone with Aum HPC. Thanks to information from the report by The Next Platform, we learn that India has developed a processor for powering its exascale high-performance computing (HPC) system. Called Aum HPC, the CPU was developed by the National Supercomputing Mission of the Indian government, which funded the Indian Institute of Science, the Department of Science and Technology, the Ministry of Electronics and Information Technology, and C-DAC to design and manufacture the Aum HPC processors and create strong, strong technology independence.

The Aum HPC is based on Armv8.4 CPU ISA and represents a chiplet processor. Each compute chiplet features 48 Arm Zeus Cores based on Neoverse V1 IP, so with two chiplets, the processor has 96 cores in total. Each core gets 1 MB of level two cache and 1 MB of system cache, for 96 MB L2 cache and 96 MB system cache in total. For memory, the processor uses 16-channel 32-bit DDR5-5200 with a bandwidth of 332.8 GB/s. To expand on that, HBM memory is present, and there is 64 GB of HBM3 with four controllers capable of achieving a bandwidth of 2.87 TB/s. As far as connectivity, the Aum HPC processor has 64 PCIe Gen 5 Lanes with CXL enabled. It is manufactured on a 5 nm node from TSMC. With a 3.0 GHz typical and 3.5+ GHz turbo frequency, the Aum HPC processor is rated for a TDP of 300 Watts. It is capable of producing 4.6+ TeraFLOPS per socket. Below are illustrations and tables comparing Aum HPC to Fujitsy A64FX, another Arm HPC-focused design.