Difference between revisions of "Programming Languages"

Revision as of 15:26, 5 May 2020

Among the decades, very many programming languages has been evolved. We list some most widely used in the context of HPC here.

Machine code: That are 10001001011110 your computer can understand. You likely not.
Assembler: human-readable (to somehow extent; many says 'for special humans'), but still very low-level. Allows the programmer to get the very last possible performance crumbs from the hardware, but in turn is hardware-dependent and very tedious to program. Highly-tuned libraries often contain ASM parts, often making this software less-portable. You should not start at assembler level when programming an application.

... readable by humans. The source code is a text file, to be modufie to an executable file by a compiler. Portability

Fortran, the 1st wide-used high-level programming, used in HPC since 1954 and will likely be used for a lomg time, as there are still many Fortran projects around. Fortran handles multi-dimensional arrays comfortably. Due to some restrictions i the language

Script / interpreted languages

Other

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 == Low-Level programming languages ==
 * Machine code: That are 10001001011110 your computer can understand. You likely not.
-* Assembler: human-readable (to somehow extent; many says 'for special humans'), but still very low-level. Allows the programmer to get the very ''last'' possible performance crumbs from the hardware, but in turn is hardware-dependent and very tedious to program. Highly-tuned libraries often contain ASM parts, often making this software less-portable.
+* Assembler: human-readable (to somehow extent; many says 'for special humans'), but still very low-level. Allows the programmer to get the very ''last'' possible performance crumbs from the hardware, but in turn is hardware-dependent and very tedious to program. Highly-tuned libraries often contain ASM parts, often making this software less-portable. You should not start at assembler level when programming an application.
 == High-level programming languages: ==