使用BioPython读取FASTA校准时出现内存错误

我正在使用BioPython在我的工作场所的计算集群上以120个序列（每个约20kb）的顺序进行读取。我的代码在我自己的计算机上运行得很好（Mac OSX Mavericks，运行的文件大小是多少？您的RAM在本地计算机上是什么样子的？另外，您使用的是哪个版本的python？32位还是64位？文件是2.4 MB。本地计算机RAM是4GB。如何检查python是32位还是64位？谢谢！它将显示在python解释器的顶部。您可以打开IDLE或只输入python也就是说，2.4MB是相对较小的。如果你能用4GB内存运行它，那么计算量就不会那么大了。

from Bio import AlignIO
alignment = AlignIO.read("my_aligment.fasta","fasta")

Traceback (most recent call last):
  File "./my_program.py", line 42, in <module>
    alignment = AlignIO.read(align, "fasta")
  File "/workplace/software/free/Linux/redhat_5_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/Bio/AlignIO/__init__.py", line 423, in read
    first = next(iterator)
  File "/workplace/software/free/Linux/redhat_5_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/Bio/AlignIO/__init__.py", line 370, in parse
    for a in i:
  File "/workplace/software/free/Linux/redhat_5_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/Bio/AlignIO/__init__.py", line 270, in _SeqIO_to_alignment_iterator
    records = list(SeqIO.parse(handle, format, alphabet))
  File "/workplace/software/free/Linux/redhat_5_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/Bio/SeqIO/__init__.py", line 586, in parse
    for r in i:
  File "/workplace/software/free/Linux/redhat_5_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/Bio/SeqIO/FastaIO.py", line 121, in FastaIterator
    for title, sequence in SimpleFastaParser(handle):
  File "/workplace/software/free/Linux/redhat_5_x86_64/pkgs/python_2.7.1-sqlite3-rtrees/lib/python2.7/site-packages/Bio/SeqIO/FastaIO.py", line 55, in SimpleFastaParser
    line = handle.readline()
MemoryError