memory | 易学教程

训练模型Out of memory问题

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1.背景最近尝试训练模型时，出现内存不足的问题，此外还遇到了显存不足的问题。尝试了网上的一些方法，发现没用或用不了：混合精度运算即半浮点数精度训练，首先试了apex这个库，结果发现没用，别的博客说pascal构架的显卡用不了，结果笔记本1050ti好像就是此构架。手动设置所有float()为half()类型，也还是不行。降低批次已经为1了，还怎么降，索性去掉BN层，然后还是提示显存不足。 2.解决: 加条内存条训练时就注意到，其实显存并没用占满，提示还有多少显存 free，但是却没法申请，而内存已经占了快80%多，或许是内存限制了。显存 -> 内存 -> 磁盘 windows上有如上共享关系，显存不够可以共享内存，内存不够可以共享磁盘（虚拟内存）。比如，任务管理器GPU上的如下信息，显存有4GB，共享了8G的内存给它，不够了可以先放内存里，一共拥有的可用内存为12G。此外，在加内存条时发现，C盘一下快被占满了，因为虚拟内存设置的自动调整，即“系统管理的大小”，结果自动调整到了16G，所以手动改一下就好。比如数据分析时装数据，如内存不够，就可以增大虚拟内存。 3.结论熟悉下流程就行了，训练大的模型不是笔记本能耍的，耍不起。来源： CSDN 作者：夏目里奇链接： https://blog.csdn.net/qq_31787603/article

flume的配置详解

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Flume： ===================== Flume是一种分布式的、可靠的、可用的服务，可以有效地收集、聚合和移动大量的日志数据。它有一个基于流数据的简单而灵活的体系结构。它具有健壮性和容错能力，具有可调的可靠性机制和许多故障转移和恢复机制。它使用一个简单的可扩展数据模型，允许在线分析应用程序。 source：源对channel而言，相当于生产者，通过接收各种格式数据发送给channel进行传输 channel：通道相当于数据缓冲区，接收source数据发送给sink sink：沉槽对channel而言，相当于消费者，通过接收channel数据通过指定数据类型发送到指定位置 Event： =============== flume传输基本单位： head + body flume安装： ================ 1、解压 2、符号链接 3、配置环境变量并使其生效 4、修改配置文件 1)重命名flume-env.ps1.template为flume-env.ps1 2)重命名flume-env.sh.template为flume-env.sh 3)修改flume-env.sh，配置jdk目录,添加 export JAVA_HOME=/soft/jdk 5、flume 查看版本 flume-ng version flume使用： ==========

Memory usage of Dictionary in c# [duplicate]

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问题 This question already has answers here : Find out the size of a .net object (7 answers) Closed 6 years ago . I have a program in c# that has a dictionary, I defined it like this: Dictionary dict<Int32,Int32> = new Dictionary<Int32,Int32>(); Then I added 100 entry to my dictionary. Now I want to know the exactly memory usage of this dictionary. please do not talk about sizeof and some methods like this, I want a mathematical way to compute it, for example if there is any pointer or any hash

“Too many indices” big matrix vector length issue in R

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问题 Hello and thanks in advance. I'm using Rx64 version 3.1.2 on a Windows Server and have a file-backed big matrix generated from the package bigmemory that I'm trying to use in a linear programming problem. The matrix is 7062 rows by 364520 columns for a total of 2574240240 entries (of integers). When I run the line for the linear program, I get the following error: Error in GetElements.bm(x, i, j) : Too many indices (>2^31-1) for extraction. That number, 2147483647, from what I read is the

“Too many indices” big matrix vector length issue in R

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How to get docker stats detail in java code?

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问题 I try to get docker container details on my java code and successfully can get it. But I need to get the CPU & memory usage of Docker container. In the terminal itself, we can check the status with docker stats . But my question is how to get the stats of Docker container in java code? 回答1: Docker CLI to make calls to Docker API. Also you can use a Java API client availible on GitHub. 回答2: A bit late for answering but it may help somebody. Considering you are running Docker engine on your

C: try to assign string literal “abc” to an array of size 3, valgrind detects error

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问题 I've been thinking of what will happen if I assign a longer string literal to a char array of smaller size. (I understand that if I use a string literal as an initializer, I would probably leave out the size and let the compiler count the number of chars, or use strlen()+1 as the size. ) I have the following code: #include <stdio.h> int main() { char a[3] = "abc"; // a[2] gives an error of initializer-string for array of chars is too long printf("%s\n", a); printf("%p\n", a); } I expect it to

If Dill file is too large for RAM is there another way it can be loaded

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问题 If a dill file is to large to RAM, is it possible to load it in an alternative method. For example python3 is throwing Memory Errors when I load a serialized object of about 1.2 GB. file = open('SerializedData.pkl', 'rb') data = dill.load(file) This will not pass because the RAM is too small. However, is it possible to load it in a different way so that I extract the data without overloading the RAM? 来源： https://stackoverflow.com/questions/32465186/if-dill-file-is-too-large-for-ram-is-there

Caching in a high-performance financial application

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问题 I am writing an application whose purpose is to optimize a trading strategy. For the sake of simplicity, assume only that we have a trading strategy that says "enter here", then another that says "exit here if in a trade" and then lets have two models: one says how much risk we should take (how much we lose if we're on the wrong side of the market) and the other says how much profit we should take (i.e. how much profit we will take if the market agrees). For simplicity sake, I will refer to

C Operator Precedence with pointer increments

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问题 I am trying to understand a line of C-code which includes using a pointer to struct value (which is a pointer to something as well). Example C-code: // Given typedef struct { uint8 *output uint32 bottom } myType; myType *e; // Then at some point: *e->output++ = (uint8) (e->bottom >> 24); Source: http://tools.ietf.org/html/rfc6386#page-22 My question is: What exactly does that line of C-code do? 回答1: "What exactly does that line of C-code do?" Waste a lot of time having to carefully read it