This article is for reading book next Generation Databases:nosql, Newsql, and Big Data Chapter 7th: The End of Disk? SSD and In-memory databases notes.The disk is dead?Bill Gates said in 1981:
640K of memory should is enough for anybody.
In 2001, he realized that the previous statement was wrong:
I ' ve said some stupid things and some wrong things, but not that.
Since the birth of the first database, database experts have
With the price of SSD solid-state hard drives down, later assembled computers to use SSD solid-state hard drive will become mainstream, at present, SSD solid-state hard disk capacity is small, and the price than mechanical hard drive to have no advantage, compared to ordinary mechanical hard drive, the gap between the big price. Believe that the
A lot of people have changed the SSD hard disk in the short term speed up quickly, but after a few months found the speed slowed. So what happens when the SSD slows down? Here are the SSD speed slow solution, and the C disk cannot be 4K aligned with the SSD hard drive (data lossless)
Because the format of the h
Many of the new friends, long ago for their love machine with the SSD, enjoy it brings the speed of response and program load, and for some old computers, upgrade SSD can significantly improve the efficiency of the machine, but also more investment than the replacement of other accessories relatively low. However, for most ordinary users, it is natural to upgrade the lower the better, in a limited budget, i
1 Environment Description
Os:ubuntu 16.04 LTS
Python 2.7.12 (System pre-installed) 2 installation CAFFE-SSD
This section refers to the CAFFE-SSD warehouse Readme Document, installation CAFFE-SSD similar to the installation Caffe, you can refer to Caffe (cpu-only) installation and configuration.
Enter the directory where you want to install CAFFE-
. Click the browse button8th step. Set up a new folder from which to search for files to exclude from cloning① Select [Scan selected folder] or [scan all folders], then click [Search]. * Specify the folder to scan to scan selected folders: Scan only selected folders scan all folders: Scan all files on disk119th step. Search for files to exclude from cloning in the newly set path10th step. Select the files to exclude from the clone① continue to select
Recently has been engaged in the object detection play, before using the FASTER-RCNN, the accuracy of 73.2%, the effect is good, but the recognition speed is a bit short, I use the GPU is gtx980ti, recognition speed is about 15fps. Recently discovered SSD ( Single shot Multibox detector) This paper has a good effect and speed, I have experimented with it, the speed is indeed much faster than FASTER-RCNN. The following is a two-part introduction. The f
still increasing the overall write amplification. The trim mechanism, ATA instructions, avoids unnecessary GC recoveries, thus reducing write amplification.In addition to the above-mentioned master mechanism can affect the value of the write amplification, the SSD internal OP reserve space size for write amplification also has a considerable impact. The larger the OP reserve space, the more blank flash blo
, Dell and the like, is simply slag. Change will find before the mechanical hard disk has a few screws are to use a special hex screwdriver to screw down, I have enough equipment, no problem, if you do not have a suitable hex screwdriver, you can also use the pliers clamp down. NBSP;10, start the system, are you feeling a little slow? Not surprisingly, the last step is worse. After the system boot is complete, open Startup disk in Settings, select it, and then restart. This is finally done, on m
+= + glog gflags protobuf boost_system boost_filesystem m HDF5_SERIAL_HL hdf5_serial "FIX: No get_image_size tool, hint get_image_size not found" that's because you're using the original caffe and need to switch to the CAFFE-SSD branch :Method One:git clone https://github.com/weiliu89/caffe.gitcd caffe/git checkout SSD # Switch to branch SSDMethod Two:Downloa
Test environmentOperating system: CentOS7.2.1511 64-bitmysql:mysql5.7.12 64-bitHDD: SSD, HDDTest tool: sysbench0.5Installing sysbench0.5Updating and installing dependent packagesgit clone https://github.com/akopytov/sysbench cd sysbench./autogen.sh# with-mysql-includes Specify MySQL installation directory# WITH-MYSQL-LIBS Specifies the directory where MySQL Lib resides./configure--with-mysql-includes=/usr/l
sibling layers, respectively, for classification and regression. The classification chooses Softmaxloss, the regression uses the Smoothl1loss. The weight ratio of the two is 1:1.3.3.3 SGD hyer-parameters: FC Layer parameters for Softmax classification tasks and Bounding-box regression are initialized with a Gaussian distribution between the standard deviations between 0.01~0.001.3.4 Truncated SVD Rapid detectionIn the detection section, RBG uses truncated SVD to optimize the
How to transfer the system to the solid state drive after installing the SSD
System migration to SSD solid State hard Drive tutorial
SSD Solid State hard disk installation system In fact, there is a very simple way, after the partition assistant upgrade 5.5, once again updated and enhanced this feature, open the latest version of the Professional edit
Make preparations
What should I do if the system runs fast? Group raid? Ssd solid state drive? No, these are all tricks. The method to be introduced today is almost ready for windows xp to be started in an instant. Opening the program is like flying-it is to load windows xp into the memory!
First, you have to have enough memory to accommodate Windows XP, and now the memory is not expensive, 2 GB is enough. I directly used 4 GB, 32-bit system can use m
Make preparations
What should I do if the system runs fast? Group raid? SSD solid state drive? No, these are all tricks. The method to be introduced today is almost ready for Windows XP to be started in an instant.ProgramLike Fei -- that is to put Windows XP into memory!What should I do if the system runs fast? Group raid? SSD solid state drive? No, these are all tricks. The method to be introduced today
System migration to SSD solid State hard Drive tutorial
SSD Solid State hard disk installation system In fact, there is a very simple way, after the partition assistant upgrade 5.5, once again updated and enhanced this feature, open the latest version of the Professional edition of the partition assistant, run.
Click the "Migrate OS to SSD/HDD" feature on the l
The approximate process is translated according to the GitHub tutorial HTTPS://GITHUB.COM/WEILIU89/CAFFE/TREE/SSD, and the pro-test is feasible1, in the home directory, get the SSD code, download completed there is a Caffe folder
git clone https://github.com/weiliu89/caffe.git
cd caffe
git Checkout SSD
2. Go to the
SSD speed slows down cause analysis:
Because the format of the hard disk is not right, SSD hard drive to give full play to its stable speed performance, it needs to carry out 4K on it, but many people have installed the system and many software, do not want to destroy the data on the 4 K for its difficulty. There are already such tools on the Internet, but often only on their non system disk, the main disk
Transferred from: http://lanbing510.info/2017/08/28/YOLO-SSD.html
Prior to the emergence of deep learning, the traditional target detection method is probably divided into regional selection (sliding window), feature extraction (SIFT, hog, etc.), classifier (SVM, adaboost, etc.) three parts, the main problems have two aspects: on the one hand, sliding window selection strategy is not targeted, time complexity, window redundancy On the other hand, the characteristics of manual design are poor. S
mechanical hard disk life of the main problem.
Note: Solid-State drives are more like a USB disk with larger capacity and faster speed
Solid-state hard disk more like the working principle, by the Flash media Storage data and master chip to control the work, the role of Flash media is to allow integrated circuits to replace the disc, through the constant charge and discharge to write and read data, and through the main control chip to c
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