diff --git a/Makefile b/Makefile
index ff8a9b0..47c5185 100644
--- a/Makefile
+++ b/Makefile
@@ -25,6 +25,9 @@
 dumpllr: dumpllr.cc collocatordb.h collocatordb.o Makefile
 	$(CXX) $(CXXFLAGS) -L. -L/usr/local/lib $@.cc -fopenmp -o$@ collocatordb.o /vol/work/kupietz/rocksdb/librocksdb.a $(PLATFORM_LDFLAGS) $(PLATFORM_CXXFLAGS) $(EXEC_LDFLAGS)
 
+dumppmicubed: dumppmicubed.cc collocatordb.h collocatordb.o Makefile
+	$(CXX) $(CXXFLAGS) -L. -L/usr/local/lib $@.cc -fopenmp -o$@ collocatordb.o /vol/work/kupietz/rocksdb/librocksdb.a $(PLATFORM_LDFLAGS) $(PLATFORM_CXXFLAGS) $(EXEC_LDFLAGS)
+
 c_testcdb: c_testcdb.c collocatordb.h collocatordb.o Makefile
 	$(CC) $(CFLAGS) -L. -L/usr/local/lib $@.c -o$@ collocatordb.o -std=gnu99 -lstdc++ -lm -lrocksdb $(PLATFORM_LDFLAGS) $(PLATFORM_CCFLAGS) $(EXEC_LDFLAGS)
 
diff --git a/dumppmicubed.cc b/dumppmicubed.cc
new file mode 100644
index 0000000..3482da0
--- /dev/null
+++ b/dumppmicubed.cc
@@ -0,0 +1,44 @@
+#include <typeinfo>
+#include <assert.h>
+#include <memory>
+#include <iostream>
+#include <stdint.h>
+#include "collocatordb.h"
+#include <thread>
+#include <chrono>
+#include <sstream> // for ostringstream
+#include <fstream>
+
+using namespace rocksdb;
+
+  
+int main(int argc, char** argv) {
+  const int START=1;
+  const int STOP=300000;
+  uint32_t *array;
+  int done = 0;
+
+  array = (uint32_t *)malloc(STOP * 20 * sizeof(uint32_t));
+  memset(array, 0, STOP * 20 * sizeof(uint32_t));
+  FILE* pFile;
+  CollocatorDB cdb = CollocatorDB(argv[1], true);
+  std::cerr << "Database " << argv[1] << " opened\n";
+  #pragma omp parallel for
+  for(uint32_t i=START; i< STOP; i++) {
+    std::vector<rocksdb::Collocator> cs = cdb.get_collocators(i);
+    int j=0;
+    for (rocksdb::Collocator c : cs) {
+      array[i*20+j] = (uint32_t) c.w2;
+      if(++j >=20)
+        break;
+    }
+    if(done++  % 100 == 0) {
+      std::cerr <<"\r\033[2K"<<std::flush;
+      std::cerr << "done: " << done * 100.0 / (STOP-START) << "%" <<std::flush;
+    }
+  }
+  pFile = fopen("file.binary", "wb");
+  fwrite(array, STOP*20, sizeof(uint32_t), pFile);
+  fclose(pFile);
+  std::cout << std::flush;
+}