pipelining

what is difference between Superscaling and pipelining ?

Well looks too simple a question to be asked but i asked after going through few ppts on both. Both methods increase instruction throughput. And Superscaling almost always makes use of pipelining as well. Superscaling has more than one execution unit and so does pipelining or am I wrong here? ...

SMTP PIPELINING fails at message body

After getting a regular gmail TLS SMTP session to work, I am trying to implement PIPELINING. According to the spec: http://tools.ietf.org/html/rfc2920 (which doesn't mention if username/password can be pipelined with AUTH LOGIN, but this seems to be working) It does say I can group: C: MAIL FROM:<[email protected]> C: RCP...

HTTP HEAD method and pipelining

I'm writing some code that parses HTTP requests and responses, but it may not see both sides of every conversation. The HTTP RFC states that a HEAD request should cause exactly the same response as GET except that a message body is not sent. This seems to imply that a Content-Length header would be included. If HTTP Pipelining is being...

Why increased pipeline depth does not always mean increased throughput?

This is perhaps more of a discussion question, but I thought stackoverflow could be the right place to ask it. I am studying the concept of instruction pipelining. I have been taught that a pipeline's instruction throughput is increased once the number of pipeline stages is increased, but in some cases, throughput might not change. Under...

F# compilation error: Unexpected type application

In F#, given the following class: type Foo() = member this.Bar<'t> (arg0:string) = ignore() Why does the following compile: let f = new Foo() f.Bar<Int32> "string" While the following won't compile: let f = new Foo() "string" |> f.Bar<Int32> //The compiler returns the error: "Unexpected type application" ...

HTTP 1.1 Pipelining

Hi, I have to implement an HTTP client in Java and for my needs it seems that the most efficient way to do it, is implement HTTP pipeline (as per RFC2616). As an aside, I want to pipeline POSTs. (Also I am not talking about multiplexing. I am talking about pipelining i.e. many requests over one connection before receiving any response-...

Using Java NIO for pipelined Http

Researching the web, I've found that pipelined Http is much faster and more power efficient (specially for mobile devices) than queued or parallel connections. The support from general libraries however seams to be small. Just recently has the widespread Apache HttpCore project gained support through its NIO module. At least it says so ...

Python smtplib and pipelining

Hi there, recently i'm studing the smtplib smtp client library for python, but i could not find any reference to the PIPELINING protocol against smtp servers that support it. Is there something i'm missing? It's not yet implemented maybe? Any other implementations rather than smtplib with PIPELINING enabled? Thanks ...