所以我在Julia中使用OpenCL API,当我运行以下代码时:
using OpenCL
device, context, queue = OpenCL.create_compute_context()
a = rand(Float32, 125356789)
abuf = OpenCL.Buffer(Float32, context, (:r, :copy), hostbuf=a)
b = OpenCL.read(queue, abuf)
isapprox(a, b)
当读回主机时,50个左右的坐标现在归零。有人可以在他们的机器上重现这个吗?这是我的规格:
Version: 10.14.73
Last Modified: 4/26/16, 12:39 AM
Bundle ID: com.apple.driver.AppleIntelHD4000Graphics
Loaded: Yes
Get Info String: AppleIntelHD4000Graphics 10.14.73
Obtained from: Apple
Kind: Intel
Architectures: x86_64
64-Bit (Intel): Yes
Location: /System/Library/Extensions/AppleIntelHD4000Graphics.kext
Kext Version: 10.1.4
Load Address: 18446743521850200000
Loadable: Yes
Dependencies: Satisfied
Signed by: Software Signing, Apple Code Signing Certification Authority, Apple Root CA
我的MAX_MEM_ALLOC_SIZE只有0.4GB,这可能是造成这种情况的原因,因为a
大于此值。
然而,我遇到了内存大小< 0.4GB,遗憾的是我无法一致地重现它们,它们似乎以某种奇怪的方式依赖于加载到设备内存中的其他缓冲区。
有没有办法重置设备内存?