new rule splitISBP:task is now parallelised per chromosome

rules/preprocessISBP.smk

@@ -23,4 +23,15 @@ rule dumpISBPsID:
 	message: "Dump ISBPs IDs"
 	input: config['results']+"/1.filteredISBPs.sorted.bed"
 	output: temp(config['results']+"/1.filteredISBPs.ids")
-	shell: " cut -f 4 {input} > {output}"
\ No newline at end of file
+	shell: " cut -f 4 {input} > {output}"
+
+rule splitISBP:
+	message: "Split isbps per chromosome"
+	input: config['results']+"/1.filteredISBPs.sorted.bed"
+	output: config['results']+"/1.filteredISBPs.sorted.{chrom}.bed"
+	log: config['results']+"/1.filteredISBPs.splitPerChrom{chrom}.log"
+	params: 'Chr{chrom}'
+	shell:
+		"""
+		fgrep -w {params} {input} 1> {output} 2> {log}
+		"""