Happy New Year!
Out with 2013 and in with 2014!!!
So here are my top ten (10) predictions for technology and gaming related things in the coming new year. I can hardly wait!
Previous blogs on power management and a host of other power management resources can be found in List of Useful Power and Power Management Articles, Blogs and References.
WHAT AND WHY DO WE WANT TO CONFIGURE IT
Offload编译指的是在一个可运行的主机代码中加入编译指示或者某些新的关键字使代码段运行在基于英特尔集成众核架构(英特尔MIC架构)的协处理器上。其编程方式类似于使用OpenMP* 指示或英特尔 Cilk™ Plus关键字在串行代码中加入并行。
I am having a question , i just want to parallize one algorithm but i found that i am having a lot of cache misses , so i decided to do loop tiling but the problem was just due the loop tiling the threads becomes more rough and i especially the overhead with adding some extra loops makes the code less efficent, is there any way decrease the number of caches misses without doing loop tiling,the problem is just i cannot do any loop tiling because of race conditions.
the code looks like this
#openmp for collapse(2)
In a scientific application, I need to avoid the cost of writing data to memory. I want to prevent an array of double-precision numbers to be written to memory. The array should reside in L2 cache as long as possible. The size of the array is about 64 kilobytes. The array may be read or written by other threads. At the end of execution, the array can be written to memory. Is this achievable? Are there any pragmas or functions to enforce this constraint?
We have built our workstation with two Xeon Phi 7110p based on Intel W2600CR2 motherboard. Our accelerators are passively cooled. We have noticed that just after mpss service has been started, micsmc shows temperature around 100 oC and raising. Just around 140 oC ( which takes few seconds) micctrl shows "node lost" and we can do nothing except switch off and on the host. Reboot doesn't work - Xeon Phis were not visible in lspci unless host was not completely turned off and on again manually.
I follow the chapter 2.3 (steps to install Intel MPSS with OFED support with mellanox* infiniband )of MPSS_Users_Guide.pdf to install MPSS. on the step 5, I get the following errors:
warning: dapl-126.96.36.199-r0.glibc2.12.2.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID ab22bbe5: NOKEY
warning: libibscif-3.1.1-r0.glibc2.12.2.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 25a28f50: NOKEY
warning: ofed-all-3.1.1-1.glibc2.12.2.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 8ca98407: NOKEY
This paper provides guidance, based on extensive lab testing conducted at Intel, to help IT organizations plan an optimized infrastructure for deploying Apache Hadoop*. It includes:
- Best practices for establishing server hardware specifications
- level software guidance regarding the operating system (OS), Java Virtual Machine (JVM), and Hadoop version
- Configuration and tuning recommendations to provide optimized performance with reduced effort
In my project, I need to pass pointer among different offload functions. However, I do not want to use global variables. For example.
I want to allocate an array on accelerator in new_array function, and hope that it would return an address on accelerator side so that I could pass the address to the next function exe_array. But, the following codes do not work.
Any solution to this case? Say again, I do not want to use global variables. Thanks!