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enfiskutensykkel / ssd-gpu-dma

Build userspace NVMe drivers and storage applications with CUDA support
BSD 2-Clause "Simplified" License
338 stars 47 forks source link

Build and Binding the helper driver #14

Closed mrutyu1987 closed 6 years ago

mrutyu1987 commented 6 years ago

Hi,

Trying to run the CUDA benchmark. Successfully build project with CUDA support. No IOMMU support

root@labuser-pc:/home/labuser# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.15.0-29-generic root=UUID=1d724a7d-a2bf-4b8d-b79f-4419bbedd509 ro quiet splash vt.handoff=7

But when try to load the helper driver: can't do the second step. With first step I can see unbind happening. 

$ echo -n "0000:05:00.0" > /sys/bus/pci/devices/0000\:05\:00.0/driver/unbind
$ echo -n "0000:05:00.0" > /sys/bus/pci/drivers/disnvm/bind

Don't see "disnvm". Here is the output of the drivers folder. Trying these on Ubuntu 16.04. Need help to setup the driver

root@labuser-pc:/home/labuser# /sys/bus/pci/drivers/
agpgart-intel/    imsttfb/          nvidia-nvswitch/  skx_uncore/
agpgart-via/      ioatdma/          nvme/             snd_hda_intel/
ahci/             iosf_mbi_pci/     ohci-pci/         uhci_hcd/
asiliantfb/       ipmi_si/          parport_pc/       virtio-pci/
ata_generic/      libnvm helper/    pata_sis/         xen-platform-pci/
ata_piix/         lpc_ich/          pcieport/         xhci_hcd/
ehci-pci/         mei_me/           serial/           
i40e/             nvidia/           shpchp/

Regards, MJay

enfiskutensykkel commented 6 years ago

Hi,

Apologies for the late reply.

I think the documentation may be a bit outdated. The helper driver isn't named disnvm anymore (hasn't been for quite some time), but "libnvm helper" (which is visible in your output).

Using bind shouldn't be necessary though, as the libnvm helper driver is supposed to probe for a disk by itself. Please check the output of dmesg and search for output from libnvm.

Regards, Jonas