pstream | parallelism benchmark to test cache | Performance Testing library

by spikebike C Version: 1.0 License: GPL-2.0

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kandi X-RAY | pstream Summary

pstream is a C library typically used in Testing, Performance Testing applications. pstream has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

pstream - A bandwidth, latency, and parallelism benchmark to test cache and memory. Pstream is designed to explore the bandwidth and latency of the memory hierarchy.

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Support

pstream has a low active ecosystem.

It has 5 star(s) with 2 fork(s). There are 2 watchers for this library.

It had no major release in the last 12 months.

pstream has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of pstream is 1.0

Quality

pstream has no bugs reported.

Security

pstream has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

pstream is licensed under the GPL-2.0 License. This license is Strong Copyleft.

Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

Reuse

pstream releases are available to install and integrate.

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pstream Key Features

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pstream Examples and Code Snippets

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Community Discussions

Trending Discussions on pstream

Okhttp always return error 404 but work perfectly in chrome on windows

What's the purpose of Boost pipe and why it's important?

Translate audio from speaker output in python with azureSDK

Why does ActivateObject function return E_POINTER?

Copy lStream to byte array

Flink co group outer join fails with High Backpressure

How to log offset in KStreams Bean using spring-kafka and kafka-streams

Puma - No such file or directory - connect(2). No idea where it's getting this location from

Read series of integers from cout of one program into cin of another program in C++

How to load a PNG from RESOURCES into a CImage

QUESTION

Okhttp always return error 404 but work perfectly in chrome on windows

Asked 2021-Mar-08 at 08:38

Hi I use okhttp it works fine but for this url okhttp always return 404 response

I try this link on chrome on windows and it works perfecty and Method used is GET

...

ANSWER

Answered 2021-Mar-08 at 02:27

Although it might work for you, I personally get a 404 error when using Chrome, so I think this might be a server side issue and not anything related to your code.

Source https://stackoverflow.com/questions/66523548

QUESTION

What's the purpose of Boost pipe and why it's important?

Asked 2021-Feb-07 at 23:02

Apologies if this question is overly broad. I'm new to C++ and trying to understand different stream types and why they matter (or doesn't matter).

I'm learning by coding a simple program that launch a child process, and process the output. I'm following the Boost process synchronous IO example: https://www.boost.org/doc/libs/1_75_0/doc/html/boost_process/tutorial.html#boost_process.tutorial.io.

One of the example can be reduce to this:

...

ANSWER

Answered 2021-Feb-07 at 23:02

What Are Processes, How Do They Talk?

Programs interact with their environment in various ways. One set of channels are the standard input, output and error streams.

These are often tied to a terminal or files by a shell (cmd.exe, sh, bash etc).

Now if programs interact with eachother, like:

Source https://stackoverflow.com/questions/66093683

QUESTION

Translate audio from speaker output in python with azureSDK

Asked 2021-Jan-08 at 16:53

I'm looking to make an application, who woul'd let me translate any audio going out of the speaker in live stream. This way, i will be able to translate any videoconference from any live stream app(youtube,teams,zoom,etc.). I'm not far from a solution, but not there yet.

Src language would be: fr-CA or en-US Dst language would be : fr-Ca or en-US

I was able to get audio stream back from speaker with a custom version of pyaudio allowing loopback with the WASAPI of windows.(https://github.com/intxcc/pyaudio_portaudio)

The next step is to shoot the stream in realtime to Azure translate api in the speechsdk.

so far, the part of getting the stream from speakers is working, but when i plug it with azure, i don't have any error, but it doesn't return any result either. In fact, every like 30 second i recive a reason=ResultReason.NoMatch or a bribe of text that make no sens.

My first though is that the stream byte coming from speaker witch is 48khz, 2 channels is not supported by Azure stream.(i think i read somewhere on the net that it support only 16khz 1 channel, but i'm not sure). And if that so, i found a way to split split two channel into 1, but i don't know how to drop from 48khz to 16khz from a chunk of bytes in realtime..

Any help would be appreciated! Thanks. Here my code:

...

ANSWER

Answered 2021-Jan-08 at 16:53

I found a working solution. I had indeed to downsample to 16000hz and use mono channel. I base my code on this Solution, but using stream chunk rather than read from file.

My function was:

Source https://stackoverflow.com/questions/65586642

QUESTION

Why does ActivateObject function return E_POINTER?

Asked 2020-Dec-04 at 14:04

i'm trying to work with windows media fundation, get hang of it. I was following steps from this tutorial, and at some point i got stuck.

Let me describe my problem.

I am calling ActivateObject function from object IMFActivate. This function call is presented in tutorial, I guess, in proper way, so I just copy-pasted it and didn't put a lot of thought on it.

After I completed all steps from tutorial (and wrapped it in class myself(!!)), I tried to run it, and HRESULT from that function call is E_POINTER which means that invalid pointer was passed.

I won't copy-paste my whole code, i'll narrow it down to objects used, and call itself. Here is how function call looks like:

...

ANSWER

Answered 2020-Dec-04 at 14:04

I am stupid :)

I found mistake in my code.

While setting m_globalContentInfo i forgot to set profile. In code it should be something like that:

Source https://stackoverflow.com/questions/65144268

QUESTION

Copy lStream to byte array

Asked 2020-Nov-20 at 23:58

HRESULT hr = URLOpenBlockingStreamW(nullptr, cstring, &pStream, 0, nullptr);
if (FAILED(hr))
{
    return 1;
}

char buffer[4096];
do
{
    DWORD bytesRead = 0;
    hr = pStream->Read(buffer, sizeof(buffer), &bytesRead);
        
    if (bytesRead > 0)
    {
        std::cout.write(buffer, bytesRead);
    }
        
} while (SUCCEEDED(hr) && hr != S_FALSE);

//memcpy(&bytesRead, arr, sizeof(buffer));
if (FAILED(hr))
{
    return 2;
}

return 0;

...

ANSWER

Answered 2020-Nov-20 at 23:58

IStream has a Stat() method for querying the size of the stream (among other things). Query the size, then allocate a byte array of that size, then Read() into the array.

If Stat() cannot determine the size (because the download is streaming and doesn't know the full size up front), then just use a std::vector as your byte array, so that it will grow as you write more bytes to it.

Source https://stackoverflow.com/questions/64938190

QUESTION

Flink co group outer join fails with High Backpressure

Asked 2020-Oct-21 at 10:03

I have two streams in Flink stream1 has 70000 records per sec and stream2 may or may not have data.

...

ANSWER

Answered 2020-Oct-08 at 10:51

I believe the problem is that the lack of watermarks from the idle stream is holding back the overall watermark. Whenever multiple streams are connected, the resulting watermark is the minimum of the incoming watermarks. This can then lead to problems like the one you are experiencing.

You have a couple of options:

Set the watermark for stream2 to be Watermark.MAX_WATERMARK, thereby giving stream1 complete control of watermarking.
Somehow detect that stream2 is idle, and artificially advance the watermark despite the lack of events. Here is an example.

Source https://stackoverflow.com/questions/64258058

QUESTION

How to log offset in KStreams Bean using spring-kafka and kafka-streams

Asked 2020-Sep-08 at 14:05

I have referred almost all the questions regarding logging offset on KStreams via Processor API's transform() or process() method like mentioned in many questions here -

How can I get the offset value in KStream

But Im not able to get the solution these answers so I'm asking this question.

I want to log the partition, consumer-group-id and offset each time the message is consumed by the stream, I'm not getting how to integrate process() or transform() method with the ProcessorContext API? And if I'm implementing Processor interface in my CustomParser class then I would have to implement all the methods but Im not sure if that will work, like it is mentioned in the confluent docs for Record Meta Data - https://docs.confluent.io/current/streams/developer-guide/processor-api.html#streams-developer-guide-processor-api

I've set up KStreams in a spring-boot application like below (for reference have change the variable names)

...

ANSWER

Answered 2020-Sep-08 at 14:05

Implement Transformer; save off the ProcessorContext in init(); you can then access the record metadata in transform() and simply return the original key/value.

Here is an example of a Transformer. It is provided by Spring for Apache Kafka to invoke a Spring Integration flow to transform the key/value.

Source https://stackoverflow.com/questions/63775013

QUESTION

Puma - No such file or directory - connect(2). No idea where it's getting this location from

Asked 2020-Aug-03 at 21:14

So, I'm trying to deploy a Sinatra app with Capistrano. I have deployed the app successfully, however I am unable to start Puma. When I enter my app's current diretory and run pumactl -F config/puma.rb start I get the following error:

...

ANSWER

Answered 2020-Aug-03 at 21:14

Try this

Source https://stackoverflow.com/questions/63161926

QUESTION

Read series of integers from cout of one program into cin of another program in C++

Asked 2020-Apr-09 at 23:33

I have found many similar questions, but none with answers that satisfy reading ints. Forgive me if I have overlooked something.

I have a program that outputs a series of 100 space-delimited integers to cout. I have another program that reads integers from cin. My goal is to create a third program that takes 2 arguments, program 1 and program 2, and connects the two, meaning the integers that are output from program 1 serve as input to program 2. I am aware of popen and pstreams, however, they seem to deal with strings. I want to avoid file io. What is the best approach?

...

ANSWER

Answered 2020-Apr-09 at 23:33

It would be wise to familiarise yourself with standard streams.

In short, every process gets 3 streams by default:

stdin (input, aka std::cin)
stdout (output, aka std::cout)
stderr (error, aka std::cerr).

Generally speaking the connections between these streams from one process to another is done when the process is invoked (usually through a shell) using something called a pipe (i.e it pipes an output to an input, or input to output etc), which incidently, is usally denoted using the 'pipe' character.

Here is an example, ~~I will leave the details about 100 space delimited integers for you to implement yourself~~ [See EDIT below], this just shows the principles of the streams and how different programs use them in situ.

First we define a program called Alice, which outputs a simple phrase...

Source https://stackoverflow.com/questions/61129172

QUESTION

How to load a PNG from RESOURCES into a CImage

Asked 2020-Mar-15 at 12:47

According to this documentation for LoadFromResource it states:

Loads an image from a BITMAP resource

So, I have this in my code:

...

ANSWER

Answered 2020-Mar-15 at 12:47

AfxFindResource
LoadResource
GlobalAlloc
CopyMemory
CreateStreamOnHGlobal
CImage::Load(IStream*...)

Or you write your own IStream implementation that takes a pointer and a size from LoadResource. Also CSharedFile is an option.

Source https://stackoverflow.com/questions/45441475

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Vulnerabilities

No vulnerabilities reported

Install pstream

You can download it from GitHub.

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