DMA transfers of job data from an adapter to parallel processing unit (PPU) fractions

A non-transitory machine-readable storage medium storing instructions that upon execution cause a host central processing unit (CPU) of a system to:

• allocate parallel processing unit (PPU) memory buffers in respective PPU fractions of one or more physical PPUs;
• send, to an adapter, references to the PPU memory buffers for association in mapping information to jobs from clients, wherein the adapter is separate from the host CPU;
• receive, from the adapter, an indication of a direct memory access (DMA) transfer of job data of a job from the adapter to a first PPU memory buffer of a first PPU fraction of the PPU fractions;
• and
• based on the indication, invoke machine-readable instructions in the first PPU fraction to process the job data in the first PPU memory buffer.

A method comprising:

• receiving, by an adapter over a network:
• first job data of a first job transferred from a first client in a first remote direct memory access (RDMA) transfer to a first adapter memory buffer in an adapter memory of the adapter, and
• second job data of a second job transferred from a second client in a second RDMA transfer to a second adapter memory buffer in the adapter memory;
• determining, by the adapter, that the first job data is to be provided to a first parallel processing unit (PPU) fraction of one or more physical PPUs, and that the second job data is to be provided to a second PPU fraction of the one or more physical PPUs;
• performing a direct memory access (DMA) transfer of the first job data from the adapter to a first PPU memory buffer of the first PPU fraction, and a DMA transfer of the second job data from the adapter to a second PPU memory buffer of the second PPU fraction;
• and
• receiving, by the adapter, a first result of processing of the first job data by a first compute resource in the first PPU fraction, and a second result of processing of the second job data by a second compute resource in the second PPU fraction.