Opencl amd radeon r9系列smp_

在opencl程序中使用taskset-C1，其运行速度与在四核机器中不使用taskset-C1时的运行速度相同。但是任务集的负载是13%，而没有任务集的负载是50%

我在fedora 20中使用AMD驱动程序13.12，在出现太多问题后，fedora不支持AMD r9 opencl，并且AMD驱动程序无法编译，需要第三部分补丁

系统有3个GPU，我试图将一个GPU的中断分配给一个CPU核心。 问题是，我无法在/proc/irq/60中向smp_affinity回显任何内容/

CPU0 CPU1 CPU2 CPU3 0: 125 0 0 0 IO-APIC-edge timer 1: 3 3 2 2 IO-APIC-edge i8042 7: 1 0 0 0 IO-APIC-edge 8: 0 0 1 0 IO-APIC-edge rtc0 9: 0 0 0 0 IO-APIC-fasteoi acpi 14: 20553 19951 18934 23545 IO-APIC-edge pata_atiixp 15: 0 0 0 0 IO-APIC-edge pata_atiixp 16: 209 210 333 254 IO-APIC-fasteoi snd_hda_intel 17: 0 0 0 0 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2 18: 1 1 1 0 IO-APIC-fasteoi ohci_hcd:usb3, ohci_hcd:usb4, ohci_hcd:usb5 40: 0 0 0 0 PCI-MSI-edge ahci 41: 4 4 3 5 PCI-MSI-edge xhci_hcd 42: 0 0 0 0 PCI-MSI-edge xhci_hcd 43: 0 0 0 0 PCI-MSI-edge xhci_hcd 44: 0 0 0 0 PCI-MSI-edge xhci_hcd 45: 0 0 0 0 PCI-MSI-edge xhci_hcd 46: 0 0 0 0 PCI-MSI-edge xhci_hcd 47: 0 0 0 0 PCI-MSI-edge xhci_hcd 48: 0 0 0 0 PCI-MSI-edge xhci_hcd 49: 0 0 0 0 PCI-MSI-edge xhci_hcd 50: 0 0 0 0 PCI-MSI-edge xhci_hcd 51: 0 0 0 0 PCI-MSI-edge xhci_hcd 52: 0 0 0 0 PCI-MSI-edge xhci_hcd 53: 0 0 0 0 PCI-MSI-edge xhci_hcd 54: 0 0 0 0 PCI-MSI-edge xhci_hcd 55: 0 0 0 0 PCI-MSI-edge xhci_hcd 56: 260453 27 39686 10222 PCI-MSI-edge p19p1 57: 30 29 28 31 PCI-MSI-edge snd_hda_intel 58: 30 29 29 30 PCI-MSI-edge snd_hda_intel 59: 30 30 29 29 PCI-MSI-edge snd_hda_intel 60: 376820 387077 422262 414046 PCI-MSI-edge fglrx[0]@PCI:1:0:0 61: 233781 260237 282034 273928 PCI-MSI-edge fglrx[1]@PCI:2:0:0 62: 325068 337322 385699 381124 PCI-MSI-edge fglrx[2]@PCI:3:0:0 NMI: 109 466 134 132 Non-maskable interrupts LOC: 1455844 4537211 1861268 1830786 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 109 466 134 132 Performance monitoring interrupts IWI: 48127 24519 17582 13174 IRQ work interrupts RTR: 0 0 0 0 APIC ICR read retries RES: 33436070 33287609 27497110 27413290 Rescheduling interrupts CAL: 1727 1523 1401 1314 Function call interrupts TLB: 416983 448396 436569 455603 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 18 18 18 18 Machine check polls 是否可以将IRQ 60分配给核心0、61分配给1、62分配给2？

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或者减少CPU负载。

可以使用sdk 2.9和13.25 beta Driver解决问题。问题出在sdk中，请确保删除/etc/ld.so.conf.d AMD文件，该文件链接到过时的libOpenCL Linux * 3.12.6-300.fc20.x86_64 #1 SMP Mon Dec 23 16:44:31 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux display: :0.0 screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon R9 200 Series OpenGL version string: 4.3.12618 Compatibility Profile Context 13.251 display: :0.0 screen: 1 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon R9 200 Series OpenGL version string: 4.3.12618 Compatibility Profile Context 13.251 display: :0.0 screen: 2 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon R9 200 Series OpenGL version string: 4.3.12618 Compatibility Profile Context 13.251