以此深入到具体论文中,我们会发现他们的实验平台是champsim、scarab、gem5等学术用模拟器。然而即便是其中最重量级的模拟器——gem5的O3模型,倘若以产品级标准来看也是十分粗糙和不写实的,难以精确反应data prefetcher在实际产品中的表现。在某些来自intel、AMD的论文中我们可以看到emulator、与silicon误差2%的simulator等其他...
下面是DataPrefetcher的简易实现: importtorchimporttimefromthreadingimportThreadclassDataPrefetcher:def__init__(self,data_loader):self.data_loader=data_loader self.stream=torch.cuda.Stream()self.prefetch_thread=Thread(target=self._get_next)self.data_iter=iter(data_loader)self.next_data=Noneself._prefe...
DataPrefetcher 多个gpu 两个gpu 之前跑大量的深度学习代码时,用的 tensorflow 的版本比较古老,但若直接更新则会使得我们原本大量的代码需要重新编写,才能在本电脑上运行。因此可以选择另一种方式来进行“更新”:在原基础上,再配置一个 Python 的完整环境,并在里面安装tensorflow-gpu 2.0. 本实现方式参考了网上的一些...
The prefetch unit is configured to detect one or more prefetch streams corresponding to load operations that miss the data cache, and includes a memory configured to store data corresponding to potential prefetch streams. The prefetch unit is configured to confirm a prefetch stream in response to ...
Spatial data prefetchers predict futurememory accessesby relying on spatial address correlation: the similarity of access patterns among multiple pages1 of memory. That is, if a program has visited locations {X, Y, Z} of Page A, it is likely to touch the {X, Y, Z} locations of the sam...
(SOTA) learning-based prefetchers cover more LBA accesses. However, they do not adequately consider the spatial interdependencies between LBA deltas, which leads to limited performance and robustness. This paper proposes a novel Stream-Graph neural network-based Data Prefetcher (SGDP). Specifically,...
https://github.com/Megvii-BaseDetection/YOLOX/blob/main/yolox/data/data_prefetcher.py classDataPrefetcher:"""DataPrefetcheris inspired by code of following file:https://github.com/NVIDIA/apex/blob/master/examples/imagenet/main_amp.pyItcould speedup your pytorch dataloader.Formore information,please...
This repository is the open-source code for our USENIX Security 2024 paper:GoFetch: Breaking Constant-Time Cryptographic Implementations Using Data Memory-Dependent Prefetchers. Please check ourwebsitefor more information. Introduction GoFetch is a microarchitectural side-channel attack that can extract ...
A data prefetcher includes a table of entries to maintain a history of load operations. Each entry stores a tag and a corresponding next stride. The tag comprises a concatenation of
Multi-modal data prefetcherRodney E. HookerColin Eddy