![\"\"](\"https:\/\/i0.wp.com\/bp1.blogger.com\/_B32UQAsnGHA\/SEFKBbRtLWI\/AAAAAAAAAZo\/AZU-gyLBL24\/s1600-h\/architecture.png\")
<\/a>* ISA<\/span> (Instruction set architecture ) divides hardware and software. There are two kind of ISA, User ISA and System ISA.<\/p>\n
* ABI<\/span> (Application Binary Interface<\/span><\/span><\/span><\/span>) provides a program with access to the hardware resource and services available in a system. It consists of User ISA and System Call Interfaces<\/p>\n * API<\/span> (Application Programming <\/span><\/span><\/span><\/span>Interface) <\/span>is a source code interface that an operating system, library or service provides to support requests made by computer programs. By taking above things in mind we can divide Virtual Machines in two categories:-<\/p>\n Process VM<\/span> at the ABI level: Virtualization of individual processes. System VM<\/span> at the ISA level. In system virtualiztion <\/span><\/span><\/span>I talked about hardware emulation, hypervisor<\/span><\/span><\/span><\/span>, full and para virtualization.I referred following for the same. I was surprised to know that kvm is now supporting <\/span>para-virtualization as well.<\/p>\n <\/span> <\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":" GEEP — GEEKs Of Pune…GEEP is a non-profit group to promote Linux system software.You can find more details at :-http:\/\/tech.groups.yahoo.com\/group\/geep_linux\/ On 25th May’08 GEEP has organized the session on Virtualization.There were two presentations:-a. For beginners by me.b. For advance users by Mr. Amit Shah If we put “vitualization” on any search engine we get ‘n’ … Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[48],"tags":[],"class_list":["post-83","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/posts\/83","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/comments?post=83"}],"version-history":[{"count":0,"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/posts\/83\/revisions"}],"wp:attachment":[{"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/media?parent=83"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/categories?post=83"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/neependra.net\/index.php\/wp-json\/wp\/v2\/tags?post=83"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
clib in Unix environment : supports the UNIX\/C programming .<\/p>\n
E.g., running x86 applications on Alpha CPU.
Java is another example of process virtualizaton. When we compile a java<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> program, it is compiled into some kind <\/span><\/span> a pseu<\/span><\/span><\/span><\/span><\/span><\/span><\/span>do lang<\/span>uage which can interpre<\/span><\/span>ted by a jvm(java virtual machine). That is java is platform independent. Please note that jvm is different is each platform.<\/span>
<\/span>
Process virtualization is a matter of correct functioning and not a matter of performance.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n
Virtualization of complete systems
E.g., running Linux (and its applications) on Windows.<\/p>\n
<\/span><\/span><\/span>http:\/\/www.ibm.com\/developerworks\/library\/l-linuxvirt\/index.html
<\/span><\/span>
Then I talked about a bit kvm and handed over to Amit.
Amit’s presentation was awesome.<\/span><\/span><\/span><\/span><\/p>\n
<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n