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Hello,
I want to use intel CBDMA driver for a memcpy from system memory to MMIO region.
Speaking of xilinx, they have their pcie dma throghput/performance numbers I can see like below.
If someone knows where document about intel ioat DMA driver performance is, please let me know. Thanks.
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Hello jy7805heo,
Thank you for posting on the Intel® communities.
In order to better assist you, please provide the following:
1. Model name of the CPU that you are using.
2. Are you using a laptop or a desktop computer?
3. Are you using any other Intel product? If so, can you provide the model name?
Regards,
Deivid A.
Intel Customer Support Technician
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Hello Deivid, thank you for the response. I'm using dell T640 as a server.
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 56
On-line CPU(s) list: 0-55
Thread(s) per core: 1
Core(s) per socket: 28
Socket(s): 2
NUMA node(s): 4
Vendor ID: GenuineIntel
CPU family: 6
Model: 85
Model name: Intel(R) Xeon(R) Gold 6258R CPU @ 2.70GHz
Stepping: 7
CPU MHz: 2700.000
BogoMIPS: 5400.00
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 1024K
L3 cache: 39424K
NUMA node0 CPU(s): 0,4,8,12,16,20,24,28,32,36,40,44,48,52
NUMA node1 CPU(s): 1,5,9,13,17,21,25,29,33,37,41,45,49,53
NUMA node2 CPU(s): 2,6,10,14,18,22,26,30,34,38,42,46,50,54
NUMA node3 CPU(s): 3,7,11,15,19,23,27,31,35,39,43,47,51,55
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single ssbd mba ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm arat pln pts pku ospke avx512_vnni md_clear flush_l1d arch_capabilities
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Hello jy7805heo,
Thanks for the information provided,
Based on your hardware, I would like to inform you that we have a forum for these specific issues and products, so we are moving it to the "Hardware Products, Server Products" forum so you can get better support for this matter.
- https://community.intel.com/t5/Server-Products/bd-p/server-products
Regards,
Deivid A.
Intel Customer Support Technician
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Hello jy7805heo,
Thank you for joining the community
I am from the servers department. I think this white paper could be useful:
White Paper: Accelerating High-Speed Networking with Intel® I/OAT
Take into consideration that more specific info might require a Corporate Non-Disclosure Agreement between your company and Intel.
Hope it helps
Jose A.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit:
https://intel.com/support/serverbios
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Thank you, JoseH, but I've already read it and it seems old article. (2006)
Could I consider that performance numbers as latest ?
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Hello jy7805heo,
You are correct. This paper is a bit outdated. Let me try to get something more recent. I will get back to you soon.
Jose A.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit:
https://intel.com/support/serverbios
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Hello jy7805heo,
Thank you for waiting for our updates, can you please let us know the operating system that you are running?
We will be looking forward to your updates.
Best regards,
Sergio S.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit :https://intel.com/support/serverbios
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I know it's difficult to find what you may be looking for. At least make a reasonable start to a topic for valid information.
And again you are not even looking in the right place. Thanks for that other link;
@jy7805heo wrote:
Hello,
I want to use intel CBDMA driver for a memcpy from system memory to MMIO region.
Speaking of xilinx, they have their pcie dma throghput/performance numbers I can see like below.
If someone knows where document about intel ioat DMA driver performance is, please let me know. Thanks.
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Hello jy7805heo,
We are still waiting for the OS version that your system is currently running. I will try to reach you by the last time on next Thursday 7th. After that the thread will be archived automatically.
Jose A.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit:
https://intel.com/support/serverbios
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Operating System: Ubuntu 18.04.5 LTS
Kernel: Linux 5.4.78+
Architecture: x86-64
Thanks !
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Hello jy7805heo,
We appreciate the additional information
Can you please let us know if there is a specific driver (Linux kernel, DPDK, SPDK) that you are interested in or just information on what the Xeon processor hardware is capable of?
DPDK is Data Plane Development Kit (dpdk.org).
SPDK is Storage Performance Development Kit (spdk.io , https://software.intel.com/content/www/us/en/develop/articles/introduction-to-the-storage-performance-development-kit-spdk.html)
We will be looking forward to your updates.
Best regards,
Sergio S.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit :https://intel.com/support/serverbios
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Hello SergioS,
https://doc.dpdk.org/guides/rawdevs/ioat.html
We're using DPDK and we've followed above guide. (vfio-pci)
Thanks !
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Hello jy7805heo,
Thank you for the info. Just to recap on the thread, you are using the DPDK, following this guide https://doc.dpdk.org/guides/rawdevs/ioat.html and need the Intel I/OAT DMA driver as one of the steps from the guide. Am I correct? If not please let me know
Regards
Jose A.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit:
https://intel.com/support/serverbios
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Hello JoesH,
You are correct, and the I/OAT DMA driver is working fine at my end. The one I want to get is an INTEL official performance result of an I/OAT driver. (if you have)
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Hello jy7805heo,
Thank you very much for the confirmation. Let me try to get such performance result for you (if available). I will get back to you soon.
Regards
Jose A.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit:
https://intel.com/support/serverbios
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Hello jy7805heo,
We regret to inform you that we don't have such a document containing performance data of the I/OAT drive.
We have NDA documentation for CBDMA performance for memory to MMIO/PCIe transfers.
This shows the performance capabilities of the CBDMA HW engine itself.
Do you strictly require this specific information?
Regards
Jose A.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit:
https://intel.com/support/serverbios
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Hello jy7805heo,
We will proceed to mark this thread as closed. If you have further issues or questions just go ahead and submit a new topic.
Regards
Jose A.
Intel Customer Support Technician
For firmware updates and troubleshooting tips, visit:
https://intel.com/support/serverbios
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Hello JoseH,
Thank you for you support. I agree to close this case, but
We have NDA documentation for CBDMA performance for memory to MMIO/PCIe transfers.
--> could you share this documentation if possible? Thank you.
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