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74%
New Features in PowerCLI 6.0 R3
13.02.2017
Home »  Archive  »  2017  »  Issue 37: Distr...  » 
Lead Image © Rgbspace, Fotolia.com
Sphere API for Storage Awareness (VASA) with vCenter 5.0 back in August 2011 but has only now implemented it in PowerCLI. In addition to the VASAStorageArray and VASAProvider object classes, the cmdlets Get ... PowerCLI 6.0 Release 3 ... New Features in PowerCLI 6.0 R3
74%
Adding high availability to a Linux VoIP PBX
07.04.2022
Home »  Archive  »  2022  »  Issue 68: Autom...  » 
Lead Image © MIR, Fotolia.com
on each subnet. This "multihoming" step is where most users get stuck, but it's not complicated; just ensure that each interface is on its own subnet (Figure 1). The most common mistake is to put multiple
74%
Getting Started with HPC Clusters
05.06.2013
Home »  HPC  »  Articles  » 
Getting started in the HPC world requires learning to write parallel applications and learning to administer and manage clusters. We take a look at some ways to get started. ... -channel; 1 PCIe 2.0x16 slot, 1 PCI slot; 2x SATA 3Gbps connectors, RAID-0/1/10; Realtek 8105E GigE NIC 1 $42.99 $42.99 1866MHz dual-channel memory 2x 2GB = 4GB total memory ... Getting started in the HPC world requires learning to write parallel applications and learning to administer and manage clusters. We take a look at some ways to get started. ... Getting Started with HPC Clusters ... Getting Started with HPC Clusters
74%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
.13.134.52):            Not shown: 994 filtered ports            PORT    STATE  SERVICE VERSION            22/tcp  open   ssh     OpenSSH 4.3 (protocol 2.0)            25/tcp  closed smtp            53/tcp  open   domain  ISC BIND 9
74%
Optimizing utilization with the EDF scheduler
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © SV-Luma, 123RF.com
, unsigned int flags) 057 { 058 return syscall(__NR_sched_getattr, pid, attr, size, flags); 059 } 060 061 void *run_deadline(void *data) 062 { 063 struct sched_attr attr; 064 int x = 0, ret; 065
74%
TCP Stealth hides open ports
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © momo5287, 123RF.com
[...]$ The new system call setsockopt() can also be traced using analysis tools such as strace: $ grep setsockopt tcp_stealth_server.strace 29392 setsockopt(3, SOL_TCP, 0x1a /* TCP_??? */, "This is mymagic
74%
Swagger and OpenAPI Specification for documents
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © smeagorl, 123RF.com
Swagger Spec for the Echo Service ¤¤nonumber 01 swagger: '2.0' 02 info: 03 title: Echo example 04 version: 1.0.0 05 description: | 06 #### Returns each URL, method, parameter and header 07
74%
A self-healing VM system
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © THISSATAN KOTIRAT , 123RF.com
.14.2.1; option subnet-mask 255.255.255.0; option domain-name-servers 10.14.2.210; option domain-search "giantco.cxm"; range 10.14.2.10 10.14.2.100; } Extreme care
74%
A Brief History of Supercomputers
21.01.2021
Home »  HPC  »  Articles  » 
1992 i486DX2 2:1 clock multiplier, 40/20, 50/25, 66/33 speeds; L2 on MB Mar 1994 i486DX4 3:1 clock multiplier, 75/25, 100/33 speeds; 16KB L1 cache on-die, L2
74%
Finding Memory Bottlenecks with Stream
25.09.2013
Home »  HPC  »  Articles  » 
One of the key bottlenecks for HPC application performance is memory bandwidth: literally, how fast you can get data from memory to the processor and back. A convenient microbenchmark named Stream ... the memory controller was not in the processor. I believe the AMD Opteron debuted this feature in x86 processors. Using the old FSB, the memory bandwidth per core was only 0.9GBps/core. Compared to this ... One of the key bottlenecks for HPC application performance is memory bandwidth: literally, how fast you can get data from memory to the processor and back. A convenient microbenchmark named Stream

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