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Parallel Programming with Python | Hacker News

Pro Sports River of News - Wed, 08/22/2018 - 17:48
quietbritishjim 2 days ago [-] In response to the multiple comments here complaining that multithreading is impossible in Python without using multiple processes, because of the GIL (global interpreter lock): This is just not true, because C extension modules (i.e. libraries written to be used from Python but whose implementations are written in C) can release the global interpreter lock while inside a function call. Examples of these include numpy, scipy, pandas and tensorflow, and there are many others. Most Python processes that are doing CPU-intensive computation spend relatively little time actually executing Python, and are really just coordinating the C libraries (e.g. "mutiply these two matrices together"). The GIL is also released during IO operations like writing to a file or waiting for a subprocess to finish or send data down its pipe. So in most practical situations where you have a performance-critical application written in Python (or more precisely, the top layer is written in Python), multithreading works fine. If you are doing CPU intensive work in pure Python and you find things are unacceptably slow, then the simplest way to boost performance (and probably simplify your code) is to rewrite chunks of your code in terms of these C extension modules. If you can't do this for some reason then you will have to throw in the Python towel and re-write some or all of your code in a natively compiled language (if it's just a small fraction of your code then Cython is a good option). But this is the best course of action regardless of the threads situation, because pure Python code runs orders of magnitude slower than native code. reply

Prominent Westchester GOP Attorney Indicted on Fraud And False Statement Charges in Federal Embezzlement Case

Business River of News - Tue, 08/21/2018 - 15:31
Rate Article:  0 Your rating: None 0 No votes yet WHITE PLAINS, NY -- A federal grand jury in White Plains returned an Indictment yesterday charging Westchester Republican County Committee...

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Prominent Westchester GOP Attorney Indicted on Fraud And False Statement Charges in Federal Embezzlement Case

Featured Posts - Tue, 08/21/2018 - 15:31
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WHITE PLAINS, NY -- A federal grand jury in White Plains returned an Indictment yesterday charging Westchester Republican County Committee Law Chairman Guy Parisi with conspiracy, mail fraud and false statements.

TOTS_WideLegalUnited States

Prominent Westchester GOP Attorney Indicted on Fraud And False Statement Charges in Federal Embezzlement Case

Featured Posts - Tue, 08/21/2018 - 15:31
Rate Article:  0 Your rating: None 0 No votes yet

WHITE PLAINS, NY -- A federal grand jury in White Plains returned an Indictment yesterday charging Westchester Republican County Committee Law Chairman Guy Parisi with conspiracy, mail fraud and false statements.

TOTS_WideLegalUnited States

Fourth Annual Westchester International Children’s Film Festival

Lifestyle River of News - Sun, 08/19/2018 - 14:42

Fourth Annual Westchester International Children’s Film Festival

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PELHAM, NY -- From Friday, September 7th through Tuesday, September 11th The Picture House Regional Film Center (TPH) will present the fourth annual Westchester International Children’s Film Festival (WICFF) once again bringing the best new films from around the world for ages 3 through 18 to Westchester, the Bronx, and Connecticut. For the fourth year in a row, the WICFF is being sponsored by the Wildlife Conservation Society’s Bronx Zoo.

The PelhamsArts

Fourth Annual Westchester International Children’s Film Festival

Pelham - Sun, 08/19/2018 - 14:42

Fourth Annual Westchester International Children’s Film Festival

Rate Article:  0 Your rating: None 0 No votes yet

PELHAM, NY -- From Friday, September 7th through Tuesday, September 11th The Picture House Regional Film Center (TPH) will present the fourth annual Westchester International Children’s Film Festival (WICFF) once again bringing the best new films from around the world for ages 3 through 18 to Westchester, the Bronx, and Connecticut. For the fourth year in a row, the WICFF is being sponsored by the Wildlife Conservation Society’s Bronx Zoo.

The PelhamsArts

Fourth Annual Westchester International Children’s Film Festival

Featured Posts - Sun, 08/19/2018 - 14:42

Fourth Annual Westchester International Children’s Film Festival

Rate Article:  0 Your rating: None 0 No votes yet

PELHAM, NY -- From Friday, September 7th through Tuesday, September 11th The Picture House Regional Film Center (TPH) will present the fourth annual Westchester International Children’s Film Festival (WICFF) once again bringing the best new films from around the world for ages 3 through 18 to Westchester, the Bronx, and Connecticut. For the fourth year in a row, the WICFF is being sponsored by the Wildlife Conservation Society’s Bronx Zoo.

The PelhamsArts

Fourth Annual Westchester International Children’s Film Festival

Lifestyle River of News - Sun, 08/19/2018 - 14:42

Fourth Annual Westchester International Children’s Film Festival

Rate Article:  0 Your rating: None 0 No votes yet

PELHAM, NY -- From Friday, September 7th through Tuesday, September 11th The Picture House Regional Film Center (TPH) will present the fourth annual Westchester International Children’s Film Festival (WICFF) once again bringing the best new films from around the world for ages 3 through 18 to Westchester, the Bronx, and Connecticut. For the fourth year in a row, the WICFF is being sponsored by the Wildlife Conservation Society’s Bronx Zoo.

The PelhamsArts

Fourth Annual Westchester International Children’s Film Festival

Pelham - Sun, 08/19/2018 - 14:42

Fourth Annual Westchester International Children’s Film Festival

Rate Article:  0 Your rating: None 0 No votes yet

PELHAM, NY -- From Friday, September 7th through Tuesday, September 11th The Picture House Regional Film Center (TPH) will present the fourth annual Westchester International Children’s Film Festival (WICFF) once again bringing the best new films from around the world for ages 3 through 18 to Westchester, the Bronx, and Connecticut. For the fourth year in a row, the WICFF is being sponsored by the Wildlife Conservation Society’s Bronx Zoo.

The PelhamsArts

Fourth Annual Westchester International Children’s Film Festival

Featured Posts - Sun, 08/19/2018 - 14:42

Fourth Annual Westchester International Children’s Film Festival

Rate Article:  0 Your rating: None 0 No votes yet

PELHAM, NY -- From Friday, September 7th through Tuesday, September 11th The Picture House Regional Film Center (TPH) will present the fourth annual Westchester International Children’s Film Festival (WICFF) once again bringing the best new films from around the world for ages 3 through 18 to Westchester, the Bronx, and Connecticut. For the fourth year in a row, the WICFF is being sponsored by the Wildlife Conservation Society’s Bronx Zoo.

The PelhamsArts

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