c++ - How do I discover the PCIe bus topology and slot numbers …
Or if I already know hardware PCIe topology with PCIe-switches, then I must know, to which hardware PCIe slot on board is connected any GPU card. As I know, even if I already know …
cpu - How is PCI segment(domain) related to multiple Host …
Mar 1, 2018 · The PCIe specification uses the word PCI segment group to define a numbering per PCR (simply put the PCI segment group is the base address of the extended CAS mechanism …
In Linux, is there a way to find out which PCI card is plugged into ...
Sep 18, 2014 · # dmidecode -t slot | grep -A8 'Slot 3' Designation: PCIe Slot 3 Type: x16 PCI Express 3 Current Usage: In Use Length: Long ID: 3 Characteristics: 3.3 V is provided PME …
How to get the topology of GPU devices? - Stack Overflow
Apr 15, 2023 · I want to write a function that returns the topology of the underlying GPU devices as a graph. I want the connections to indicate where data transfer can occur, and the weights …
PCI Express BAR memory mapping basic understanding
Assuming it is, yes you can transfer data between a slave PCIe device and host using a DMA controller. I am working on a project which involves "PCIe-DMA" connected with the host over …
How to remove CL_INVALID_PLATFORM error in opencl code?
Oct 2, 2013 · Doing simple matrix multiplication using OpenCL: // Multiply two matrices A * B = C #include <stdlib.h> #include <stdio.h> #include <math.h> #include …
What is the common topology of GPU within clusters?
Feb 13, 2020 · A two-socket system has several PCIe root ports on each socket. A PCIe bridge is attached to each root port, and the GPUs are attached to the bridges. Connections labeled …
Looking for a tool to examine a PCIe Device tree [closed]
May 29, 2014 · I am looking for a tool that can show the device tree for pci express devices including switches. I am trying to examine the topology of the pcie from root port down to …
pci e - PCIe BAR alignment issue under Linux - Stack Overflow
Aug 28, 2024 · As the PCIe core code is platform-independent, my first try is to use qemu-system-x86_64, but the problem with qemu x86_64 platform is that it uses UEFI BIOS by default thus …
Figuring out GPU links topology programmatically with CUDA
Sep 18, 2019 · I'm trying to figure out link topology between GPUs. Basically, do pretty much the same nvidia-smi topo -m does. I've found a CUDA example topologyQuery, which basically …