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Metal memory: Small memory leak on init, dangling pointer, and unused autorelease pool in graph compute #5007

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Jan 18, 2024
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Metal memory: Small memory leak on init, dangling pointer, and unused autorelease pool in graph compute #5007

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Metal memory: Small memory leak on init, dangling pointer, and unused…
ptsochantaris Jan 17, 2024
130eac8
SPM header potential fix
ptsochantaris Jan 17, 2024
1c98f99
Reverting symlinks
ptsochantaris Jan 17, 2024
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16 changes: 6 additions & 10 deletions ggml-metal.m
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Original file line number Diff line number Diff line change
Expand Up @@ -238,21 +238,19 @@ static void ggml_metal_log(enum ggml_log_level level, const char * format, ...){
static struct ggml_metal_context * ggml_metal_init(int n_cb) {
GGML_METAL_LOG_INFO("%s: allocating\n", __func__);

id<MTLDevice> device;
NSString * s;

#if TARGET_OS_OSX
#if TARGET_OS_OSX && !GGML_METAL_NDEBUG
// Show all the Metal device instances in the system
NSArray * devices = MTLCopyAllDevices();
for (device in devices) {
s = [device name];
for (id<MTLDevice> device in devices) {
NSString * s = [device name];
GGML_METAL_LOG_INFO("%s: found device: %s\n", __func__, [s UTF8String]);
}
[devices release]; // since it was created by a *Copy* C method
#endif

// Pick and show default Metal device
device = MTLCreateSystemDefaultDevice();
s = [device name];
id<MTLDevice> device = MTLCreateSystemDefaultDevice();
NSString * s = [device name];
GGML_METAL_LOG_INFO("%s: picking default device: %s\n", __func__, [s UTF8String]);

// Configure context
Expand Down Expand Up @@ -712,7 +710,6 @@ static bool ggml_metal_supports_op(const struct ggml_metal_context * ctx, const
static bool ggml_metal_graph_compute(
struct ggml_metal_context * ctx,
struct ggml_cgraph * gf) {
@autoreleasepool {

MTLComputePassDescriptor * edesc = MTLComputePassDescriptor.computePassDescriptor;
edesc.dispatchType = MTLDispatchTypeSerial;
Expand Down Expand Up @@ -2255,7 +2252,6 @@ static bool ggml_metal_graph_compute(
}

return true;
}
}

////////////////////////////////////////////////////////////////////////////////
Expand Down
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