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The Lounge War Stories Linus Torvalds reply about Meltdown and Spectre. Post 303012272 by dodona on Thursday 1st of February 2018 03:41:01 PM
Old 02-01-2018
I read that with the 4.15 Kernel with build-in patches for the hypothetical problem comes with 15-30% performance loss. Immediately I thought 'wow, Intel, AMD and the hardware pushers will earn a lot of $'. I mean todays cpu is so fast that there isn't a need for a upgrade. However the hypothetical problem with the 15-30% performance loss is the need for an upgradeSmilie. Again everything comes down to $, and nothing else than $.Smilie
 

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MPSCNNLossDataDescriptor(3)				 MetalPerformanceShaders.framework			       MPSCNNLossDataDescriptor(3)

NAME
MPSCNNLossDataDescriptor SYNOPSIS
#import <MPSCNNLoss.h> Inherits NSObject, and <NSCopying>. Instance Methods (nonnull instancetype) - init Class Methods (nullable MPSCNNLossDataDescriptor *) + cnnLossDataDescriptorWithData:layout:size: Properties MPSDataLayout layout MTLSize size NSUInteger bytesPerRow NSUInteger bytesPerImage Detailed Description This depends on Metal.framework. The MPSCNNLossDataDescriptor specifies a loss data descriptor. The same descriptor can be used to initialize both the labels and the optional weights data. Method Documentation + (nullable MPSCNNLossDataDescriptor*) cnnLossDataDescriptorWithData: (NSData *__nonnull) data(MPSDataLayout) layout(MTLSize) size Make a descriptor loss data. The bytesPerRow and bytesPerImage are automatically calculated assuming a dense array. If it is not a dense array, adjust bytesPerRow and bytesPerImage to the right value by changing properties. Parameters: data The per-element loss data. The data must be in floating point format. layout The data layout of loss data. size The size of loss data. Returns: A valid MPSCNNLossDataDescriptor object or nil, if failure. - (nonnull instancetype) init Property Documentation - bytesPerImage [read], [write], [nonatomic], [assign] Slice bytes of loss data. This parameter specifies the slice bytes of loss data. - bytesPerRow [read], [write], [nonatomic], [assign] Row bytes of loss data. This parameter specifies the row bytes of loss data. - layout [read], [nonatomic], [assign] Data layout of loss data. See MPSImage.h for more information. This parameter specifies the layout of loss data. - size [read], [nonatomic], [assign] Size of loss data: (width, height, feature channels}. This parameter specifies the size of loss data. Author Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code. Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSCNNLossDataDescriptor(3)
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