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Compute 30000 digits of the mathematical constant π, with the fastest code.

Implement in any computer programming language that I can run in my 64 bit Linux machine. You should provide your compiler optimization options if any. I am ready to install a new compiler or language runtime to run your code, given that I am not spending any money.

The code that finishes calculation and prints the output in the shortest time wins! I will measure the running time with the time command.

note 1: The program should be single threaded.
note 2: With 3.14, the number of digits is 3; with 3.1415, 5, and so on.
note 3: Hard coding π is not allowed.
note 4: Now you can use any number form in your code, not only integer.
note 5: Your output, which should be in decimal digits, need not contain the .. Just print out the numbers.
note 6: Your last digit should not be rounded up. If the next digit after the last is 5 or more, you should round up your last digit still leave the last digit as is.

Since this question was marked as duplicate, to this question. I should explain that this is a 'fastest-code' question not 'code-golf' and thus not a dupliate. The 'code-golf' answers are not well suited as an answer to this question; they are not the 'fastest'.

Compute 30000 digits of the mathematical constant π, with the fastest code.

Implement in any computer programming language that I can run in my 64 bit Linux machine. You should provide your compiler optimization options if any. I am ready to install a new compiler or language runtime to run your code, given that I am not spending any money.

The code that finishes calculation and prints the output in the shortest time wins! I will measure the running time with the time command.

note 1: The program should be single threaded.
note 2: With 3.14, the number of digits is 3; with 3.1415, 5, and so on.
note 3: Hard coding π is not allowed.
note 4: Now you can use any number form in your code, not only integer.
note 5: Your output, which should be in decimal digits, need not contain the .. Just print out the numbers.
note 6: Your last digit should not be rounded up. If the next digit after the last is 5 or more, you should round up your last digit still leave the last digit as is.

Since this question was marked as duplicate, to this question. I should explain that this is a 'fastest-code' question not 'code-golf' and thus not a dupliate. The 'code-golf' answers are not well suited as an answer to this question; they are not the 'fastest'.

Compute 30000 digits of the mathematical constant π, with the fastest code.

Implement in any computer programming language that I can run in my 64 bit Linux machine. You should provide your compiler optimization options if any. I am ready to install a new compiler or language runtime to run your code, given that I am not spending any money.

The code that finishes calculation and prints the output in the shortest time wins! I will measure the running time with the time command.

note 1: The program should be single threaded.
note 2: With 3.14, the number of digits is 3; with 3.1415, 5, and so on.
note 3: Hard coding π is not allowed.
note 4: Now you can use any number form in your code, not only integer.
note 5: Your output, which should be in decimal digits, need not contain the .. Just print out the numbers.
note 6: Your last digit should not be rounded up. If the next digit after the last is 5 or more, you should round up your last digit still leave the last digit as is.

Compute 30000 digits of the mathematical constant π, with the fastest code.

Implement in any computer programming language that I can run in my 64 bit Linux machine. You should provide your compiler optimization options if any. I am ready to install a new compiler or language runtime to run your code, given that I am not spending any money.

The code that finishes calculation and prints the output in the shortest time wins! I will measure the running time with the time command.

note 1: The program should be single threaded.
note 2: With 3.14, the number of digits is 3; with 3.1415, 5, and so on.
note 3: Hard coding π is not allowed.
note 4: Now you can use any number form in your code, not only integer.
note 5: Your output, which should be in decimal digits, need not contain the .. Just print out the numbers.
note 6: Your last digit should not be rounded up. If the next digit after the last is 5 or more, you should round up your last digit still leave the last digit as is.

Since this question was marked as duplicate, to this question. I should explain that this is a 'fastest-code' question not 'code-golf' and thus not a dupliate. The 'code-golf' answers are not well suited as an answer to this question; they are not the 'fastest'.

Compute 30000 digits of the mathematical constant π, with the fastest code.

Implement in any computer programming language that I can run in my 64 bit Linux machine. You should provide your compiler optimization options if any. I am ready to install a new compiler or language runtime to run your code, given that I am not spending any money.

The code that finishes calculation and prints the output in the shortest time wins! I will measure the running time with the time command.

note 1: The program should be single threaded.
note 2: With 3.14, the number of digits is 3; with 3.1415, 5, and so on.
note 3: Hard coding π is not allowed.
note 4: Now you can use any number form, not only integer.
note 5: Your output need not contain the .. Just print out the numbers.
note 6: Your last digit should not be rounded up. If the next digit after the last is 5 or more, you should round up your last digit still leave the last digit as is.

Compute 30000 digits of the mathematical constant π, with the fastest code.

Implement in any computer programming language that I can run in my 64 bit Linux machine. You should provide your compiler optimization options if any. I am ready to install a new compiler or language runtime to run your code, given that I am not spending any money.

The code that finishes calculation and prints the output in the shortest time wins! I will measure the running time with the time command.

note 1: The program should be single threaded.
note 2: With 3.14, the number of digits is 3; with 3.1415, 5, and so on.
note 3: Hard coding π is not allowed.
note 4: Now you can use any number form in your code, not only integer.
note 5: Your output, which should be in decimal digits, need not contain the .. Just print out the numbers.
note 6: Your last digit should not be rounded up. If the next digit after the last is 5 or more, you should round up your last digit still leave the last digit as is.