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- Description
- Specifications
The 8335-GTA is the technical computing model of the IBM Power System S822LC. It uses the same 2U, two-socket POWER8 chassis as the commercial model but ships with two NVIDIA Tesla K80 GPU accelerators. The processor choices are 16 cores at 3.32 GHz or 20 cores at 2.92 GHz, all cores active.
Each Tesla K80 carries two Kepler GK210 GPUs and 24 GB of GDDR5, with 4,992 CUDA cores in all and 480 GBps of memory bandwidth (ECC off). Peak double-precision rate is 1.87 Tflops and peak single-precision 5.60 Tflops per card. Two of the five PCIe Gen3 slots, both x16 and CAPI-enabled, are dedicated to the GPUs; the other three are low-profile slots for adapters.
Memory rules differ from the GCA. All eight DIMM slots must be filled, the base memory is 128 GB from eight 16 GB modules (feature EM50), the other choices are eight 32 GB (EM51), 64 GB (EM52) or 128 GB (EM53) modules, and memory upgrades are not supported. A minimum order also needs a LAN adapter (feature EL4M), two power supplies and the two GPUs. Linux is the supported operating system and only OPAL runs on the GTA, with no virtualization.
Storage is two SFF bays for HDDs or SSDs. The commercial sibling without GPUs is the 8335-GCA, and the Power9 GPU server is the 8335-GTH.
| 8335-GTA Specs | |
| Machine type and model | 8335-GTA |
| Name | IBM Power System S822LC (technical computing) |
| Processors | 2 x POWER8, 16-core 3.32 GHz or 20-core 2.92 GHz |
| GPUs | 2 x NVIDIA Tesla K80 (24 GB GDDR5 each) |
| Memory | 8 DIMMs required, base 128 GB (EM50); EM51, EM52, EM53 |
| Memory upgrades | not supported |
| PCIe | 5 Gen3 slots, 2 x16 CAPI for GPUs |
| Required LAN adapter | EL4M |
| Operating system | Linux, OPAL only |
| Rack height | 2U |