Rth | Norm Matloff 's Rth package | GPU library

 by   Rth-org C++ Version: Current License: No License

kandi X-RAY | Rth Summary

kandi X-RAY | Rth Summary

Rth is a C++ library typically used in Hardware, GPU applications. Rth has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Rth is a package of functions written in [Thrust] callable from R. It thus provides to R programmers a set of parallel applications that run on both GPUs and multicore systems. Thrust is a C++ package for parallel processing. It was originally designed as a high-level approach to GPU programming, but actually can be compiled to multiple backends—​GPUs (CUDA) and multicore (OpenMP, TBB). This ability to have the same parallel code run on both GPU and multicore systems is extremely valuable. (You need not have a GPU to run the multicore backends.). Operations are high-level, such as sorting, selecting, searching and prefix scan. From these basic building blocks, a myriad of parallel applications can be coded. For example, consider Rth’s rthorder(), which (in one of its options) serves as a parallel version of R’s rank(). It first calls Thrust’s sort_by_key() function, and then uses Thrust’s scatter() function to permute the results in a way that produces the proper ranks. R programmers can use Rth without knowing C, Thrust, OpenMP or CUDA! But those who do know C/Thrust can easily develop their own apps using the Rth approach.
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              Rth has a low active ecosystem.
              It has 54 star(s) with 11 fork(s). There are 9 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 3 open issues and 2 have been closed. On average issues are closed in 137 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Rth is current.

            kandi-Quality Quality

              Rth has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              Rth does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              Rth releases are not available. You will need to build from source code and install.
              Installation instructions are available. Examples and code snippets are not available.

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            Rth Key Features

            No Key Features are available at this moment for Rth.

            Rth Examples and Code Snippets

            No Code Snippets are available at this moment for Rth.

            Community Discussions

            QUESTION

            How to use regex to match on consecutive uppercase letters of unknown length
            Asked 2021-Apr-21 at 18:31

            Ultimately I am trying to retrieve substrings from file paths which match a particular pattern of characters and numbers. But at this point I'm just trying to get my pattern matching correct. The issue is that I don't always know how many characters are in parts of the matching strings.

            For example, the broad pattern is: All uppercase followed by underscore, 4 digit number, underscore, and then mix of upper/lowercase characters and numbers.

            filepath/here/of/unknown/length/THISISTHEPATTERN_1111_Iwanttomatch/......

            so far, I have tried variations on re.compile(r'\b[A-Z]+_\d{4}_[a-zA-Z][0-9]*') however this still captures cases where the UPPERCASE part of the pattern is interspersed with lowercase characters.

            Here is a test case:

            ...

            ANSWER

            Answered 2021-Apr-21 at 18:14

            The test output shows that your regex is working perfectly to your stated pattern:

            Source https://stackoverflow.com/questions/67201085

            QUESTION

            Regex for bible references
            Asked 2021-Mar-26 at 14:50

            I am working on some code for an online bible. I need to identify when references are written out. I have looked all through stackoverflow and tried various regex examples but they all seem to fail with single books (eg Jude) as they require a number to proceed the book name. Here is my solution so far :

            ...

            ANSWER

            Answered 2021-Mar-26 at 14:50

            It does not match as it expects 2 characters using (([ .)\n|])([^a-zA-Z])) where the second one can not be a char a-zA-Z due to the negated character class, so it can not match the s in Jude some.

            What you might do is make the character class in the second part optional, if you intent to keep all the capture groups.

            You could also add word boundaries \b to make the pattern a bit more performant as it is right now.

            See a regex demo

            (Note that Jude is listed twice in the alternation)

            If you only want to use 3 groups, you can write the first part as:

            Source https://stackoverflow.com/questions/66818564

            QUESTION

            Unsupported subquery in snowflake
            Asked 2021-Mar-12 at 19:26

            I am trying to run a query in snowflake:

            ...

            ANSWER

            Answered 2021-Mar-12 at 19:26

            So correlated sub queries can normally be turn into some form of join in you case the primary things you are doing is matching on two columns and selecting what appears randomly (if you have more than 1 row in active=false state) a row, this can be turned into a row_number() and using QUALITY as the equivalent as LIMIT.

            Thus:

            Source https://stackoverflow.com/questions/66600384

            QUESTION

            split column to two according dataframe values
            Asked 2021-Mar-08 at 15:44

            I have a dataframe like:

            ...

            ANSWER

            Answered 2021-Mar-08 at 15:37

            I don't see a way to split the column, but you can use a combination of left_join() and mutate() to achieve the desired output.

            Source https://stackoverflow.com/questions/66532365

            QUESTION

            Failed to execute script pyi_rth_win32comgenpy after packing with pyinstaller
            Asked 2021-Jan-05 at 23:23

            I'm trying to pack a script that contains these external imports:

            ...

            ANSWER

            Answered 2021-Jan-05 at 23:23

            After playing around with it for about an hour, I've come to a solution. I added --hidden-import "pywin32" to the pyinstaller command, and it worked! So if uninstalling and reinstalling doesn't work, try adding "pywin32" as a hidden import.

            Source https://stackoverflow.com/questions/65587443

            QUESTION

            Mean Aggregations using pandas GroupBy and Time Series resampling
            Asked 2020-Dec-31 at 16:35

            I'm having trouble with Pandas groupby functionality and Time Series. I've read the documentation, but I can't see to figure out how to apply aggregate functions to multiple columns and calculate the mean of the volume (average) of the „aggregate “ correctly.

            This is my code for import the CSV File:

            ...

            ANSWER

            Answered 2020-Dec-31 at 14:07

            Does this work for you:

            Source https://stackoverflow.com/questions/65520185

            QUESTION

            Implement PBEWITHHMACSHA512ANDAES_256 of java jasypt in python
            Asked 2020-Nov-24 at 16:48

            I am trying to encrypt a password in python and decrypt it in java springboot application using the jasypt library through jasypt plugin.

            What i have done so far

            • For simplicity i have used a zero salt and a fixed iv
            • I have written the python script to perform the encryption using hselvarajan's pkcs12kdf ...

            ANSWER

            Answered 2020-Jun-25 at 08:53

            PBEWITHHMACSHA512ANDAES_256 applies PBKDF2 to generate the key. Encryption is performed with AES-256, CBC.

            The (originally) posted Jasypt test function used RandomIvGenerator, which creates a random IV. For the salt, ZeroSaltGenerator is applied, which generates a salt consisting of 16 zero bytes.

            To implement the Python function you are looking for, it is best to use a fixed IV, e.g. with StringFixedIvGenerator. StringFixedSaltGenerator provides a corresponding functionality for the salt (FixedStringSaltGenerator has the same functionality but is deprecated since 1.9.2). StringFixedSaltGenerator and StringFixedIvGenerator encode the passed string with UTF-8 by default (but another encoding can be specified), so that the salt (or IV) 0000000000000000 is hex encoded 0x30303030303030303030303030303030.

            Note that a fixed salt and IV may only be used for testing. In practice, a new random salt and a new random IV must be used for each encryption. Since salt and IV are not secret, they are usually concatenated with the ciphertext on byte level (e.g. in the order salt, iv, ciphertext) and sent to the receiver, who separates the parts and uses them for decryption.

            If the same parameters (especially the same salt and IV) are used on both sides, then encryption with Python and decryption with Java works.

            Encryption with Python (PyCryptodome):

            Source https://stackoverflow.com/questions/62534017

            QUESTION

            Create a boolean column based on a timestamp index
            Asked 2020-Nov-02 at 21:40

            I have a timeseries dataframe and I need to create a boolean column if the time is between certain hours of the day. I am able to get an array with the matching index location, but how do I turn that into a boolean column? Is the indexer_between_time method the quickest way of doing this calculation?

            aapl.csv

            ...

            ANSWER

            Answered 2020-Nov-01 at 22:15

            Use np.where its faster:

            Source https://stackoverflow.com/questions/64637479

            QUESTION

            Concanate data from one table to another
            Asked 2020-Sep-10 at 14:52

            I want to concanate the data from TABLE1 to TABLE 2

            TABLE 1

            ...

            ANSWER

            Answered 2020-Sep-10 at 14:38

            In the simplest case, like @jarlh said, you can just do an update:

            Source https://stackoverflow.com/questions/63830402

            QUESTION

            Deriving values based on result of the query and grouping the data
            Asked 2020-Jun-01 at 21:41

            I am writing a sql where I am trying to pull out information of the status of the courses the user has enrolled. I am trying to return single record for each user. Two fields in the select list would derive the value in the following manner

            CourseResultStatusId - If the status of all the courses is passed then return the status as passed otherwise. If any status is fail, the overall status is fail. If any of the status is expired, then overall status is expired. If any of the status is in-progress then overall status is in-progress

            ExpiryDateTime - Training expiring (nearest date) I need to apply the following logic on courses he has been assigned. cr.ExpiryDateTime > GetDate() and cr.ExpiryDateTime <= dateadd(dd,30,getdate()) )

            If you see below , the query I have written so far pulls the courses that each user has been enrolled but it is not a cumulative result. Do I need to group, if yes would need help.

            ...

            ANSWER

            Answered 2020-Jun-01 at 21:41

            If I followed you correctly, you can implement the priorization rules on the overall result of each user using conditional aggregation.

            Starting from your existing query, the logic would be:

            Source https://stackoverflow.com/questions/62140882

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install Rth

            To build the package, you will need to have the correct build environment set up. Exactly what that means depends on whether you wish to build Rth for use with a gpu or multicore. If you have a CUDA-capable NVIDIA GPU, you will need the nvcc compiler and CUDA development package. For the multicore case, you will need a C compiler with an OpenMP library (this excludes clang at the time of writing). GNU g++ should be sufficient.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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