FPGA配置数量限制？
我对FPGA技术感兴趣。我想购买一个来测试几种算法的硬件实现/加速，但我认为必须存在硬件限制，即我可以重新配置一块板或单个矩阵单元的次数。有这样的限制吗？如果是这样，平均值是多少？提供此类产品的最佳供应商是什么？
i'm interested in technology of FPGA. I would like to buy one to test hardware implementation/acceleration of few algorithms, but I think there must be hardware limitation of how many times can I reconfigure one board or single matrix cell. Is there such limitation? If so, what is an average, and what are best vendors providing such products?
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三大 FPGA 供应商是：
迄今为止，最流行的 FPGA 技术是基于 SRAM 的。这意味着 FPGA 器件配置是不稳定的。每个电源周期，FPGA 都会从非易失性存储位置（通常是闪存）加载。由于这种架构，FPGA 可以有效地无限地重新配置，我从未见过发布或引用的限制。对于 FPGA，这不是您担心的事情。您可能需要担心可以对存储配置文件的设备（例如闪存）重新编程多少次。但实际上您可能不必担心这一点。
任何引用的供应商都将是一个不错的选择，前提是他们的设备和开发板满足您的确切需求。
The big three FPGA vendors are:
By far the most popular FPGA technology is SRAM based. What this means is the FPGA device configuration is volatile. Each power cycle the FPGA is loaded from a non-volatile storage location (usually flash). Due to this architecture the FPGA are effectively infinitely reconfigurable, I have never seen a limit published or referenced. It is just not something you worry about FPGAs. You may have to worry about how many times you can reprogram the device(flash memory for instance) where you are storing the configuration file for how many times you can expect to reprogram it. Though in practice you probably do not have to worry about this.
Any of the referenced vendors would be a good choice assuming their devices and development boards fit your exact need.