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Larry mentioned the possibility of using C1100 (https://www.xilinx.com/products/accelerators/varium/c1100.html) with a bifurcated pcie bus to increase data into the GPU to hopefully 50GB/s.  But it looks like it only supports 2 QSFP28 which are 100Gb/s each?  So only 20GB/s in total per C1100?  So to support the 1TB/s produced by the largest epixUHR we would need ~50 C1100 and either put them into  ~25 GPUs, or do 50 C1100 into 50 GPUs.  And Dionisio says the 35kHz epixUHR will use PGP4 with only 15Gb/s per lane, which is ~12GB/s per C1100.  So bi-furcated pcie not necessary.